I have more trouble with tenor and bass drones.
I would plug the end of the suspected “misbehaving” drone with poster putty or a cork and play/practice with the fully working and balanced reeds. You may need to, as advised before, play with only one working drone reed until you get the “feel” of how much air that drone needs, then add another, get it balanced to about the same amount of air flow.
I use rubber O-rings that I can get at the local hardware store, if you know a teeth straightner doctor, they might be willing to give/sell you some of their bands that will fit your drones. That will give you a visible bridle that can be told from tie-in cord.
Make sure you can hold down the tongue, suck in on the output of the drone reed, turn loose and see if you can pull a vacuum for a short time (I get about .5 seconds before it lets in much air). If you can’t, you have a leaky reed, some can be fixed (composites), quills usually need to be discarded. Correct me if I am wrong as I haven’t much experience with quills (no luck, in fact).
To quieten the drone, insert a smaller bodied brass tube in the output end of the drone reed, if it is a matter of taking too much air, lower the tongue “lift”. Snap an O-ring or your favorite tie in cord or anything to hold the reed shut.
Let sit overnight, or if you are in a hurry, use an alcohol lamp or hair dryer to “heat set” the reed tongue.
I used to use an alcohol lamp, but I have changed to a hair dryer.
I place the reed on a nail in a piece of scrap board and brace the hairblower in my bench vice, place the reed 6-8" from the reed and put it on high for around 12 minutes.
Then, take off your “tie down” that you used and test the reed. Do the suck test to get used to the proper crow that you get when the reed is balanced to the chanter.