Sad story for those who have received questionable quality whistles. It is now 8 days since I notified them of my high D whistle with a defect on the underside of the mouthpiece. I’ll try again and hope for the best. I don’t understand why a producer of quality whistles in the past wouldn’t acknowledge those who have provided for their livelihood.
Sean from Lir has contacted me today about my emails concerning the defect in the whistle that was sent to me. He has requested photos to allow the quality control team to view prior to a decision to resolve the issue. This is like a previous post from a forum member on the same matter that they had encountered with their own Lir whistle. I sent in the photos, and now await the verdict.
So what’s the verdict? I hope they sent you a new one.
Thanks for asking, I appreciate it! 
No further reply back from Lir after I had sent over the pics of the whistle defect 10 days ago. I was thinking of sending it back irregardless of compensation just to get on with the situation and move on. I don’t have the address to send it back to though, so I was about to contact them to see what was going on. If they didn’t reply back with that, I was going to ask if any forum member here had their address so I can return it.
I don’t have the address to send it back to though,
Traders selling online are obliged by EU law to provide their address/location and return address from the outset. If they don’t, best not to buy from them in the first place.
I have their address but I would advise you not to send them anything if you don’t hear back from them. Αlso they’ll have to cover your shipping expenses if you’ll send the whistle back to them. It’s true that at their website they don’t provide any address af far as I know.
I had received a reply back from Sean at Lir yesterday (Thursday) shortly after posting here. They will be sending me a new whistlehead, and will give me a tracking number within 48 hours (starting about 24 hours ago).
Thanks for the replies to those that had responded. I am looking forward to playing the whistle eventually, and hope that Lir can eliminate that problem with their whistles.
No response back from Sean at Lir yet as far as forwarding to me a tracking number on a replacement whistle head that he said was coming my way. Tomorrow is one week from his last message to me when he stated he would send me a tracking number within 48 hours. Yesterday (Tuesday) I had sent him an email stating that I was looking forward to getting the tracking number.
Another week has gone by, and no further reply back from Lir as far as sending the promised whistle head to replace the faulty one. Just a heads up to those that might be considering buying one of their whistles.
So sorry I have to say “hands off Lír”.
So after no further response from Lir after all of that, and the promise of them sending me another whistle head but not sending one, I decided it was time for me to either let the whistle sit as is, or see if I could make it more player friendly. I took a very sharp small knife and whittled off the offending protruding plastic piece of the underside of the head at the very tip that was the problem. Then I filed it to make it smoother. I could then play it without being annoyed or worse.
Personally I don’t care for the touchy bottom end notes that want to break into the next octave. Otherwise it isn’t a bad whistle, but not one that I grab to play very often Sometimes I do, and hope that I can redeem that drawback and like it more. I’ll probably keep doing that here and there, but I have other whistles that I prefer to play more.
Update from my last post: I did just play the Lir D whistle a bit, and it seemed more forgiving on the lower notes with regard to finicky octave jumping. I noticed this before with whistles, and have seen that mentioned here as well. It is best not to be too quick in judging a new(ish) whistle. I did that with my Wild Irish D whistle. I had what seemed to be better whistles as far as tone goes when I first got it, and it seemed to have a bit of a softer more mellow tone than what I was used to. Gradually I found myself grabbing it to play more and more for some reason. 
Now I appreciate what traits it has to offer much more than in the beginning.
My Lír D whistle also arrived last November 2022 with a scuffed up mouthpiece tip. Also, there was separation between the inlaid silver and the plastic on the mouthpiece.
I emailed them pictures and they said send it back and they’ll replace. That’s what I did. I love the new whistle that arrived, after a month of it getting there and then getting one back to Texas.
The shipping cost me $25, a fourth of the cost of the whistle, which was darn near unacceptable to me, but in the end, it is a great whistle. Best one I own.