Where to buy regulators to Roberts halfset?

Why to ask Roberts? I know, but I find Roberts so difficult to make realdeal with regs and( other stuff too), but is there a reputable maker in europe, who’s regs are something(near same dim’s. etc ) which are worth to
add my Roberts halfset.
Cheers

Check out:
http://chiffboard.mati.ca/viewtopic.php?t=31468

Jeremy is selling his regulators! Can’t go wrong with Seth’s work. I’ve tried these regulators and they are really nice. Hope that helps.

Paul

… but will they fit without alteration to either seet?