I dont disagree about the seal thing, but frankly its annoying to go thru 30-40 buds trying to get a seal. I am custom fit only from here on out. I would love to try the coppers with a custom tip on them. (the hole is to big to smush the um56 on it)
I highly highly highly recommend not screwing with universal buds anymore and get a pair of custom tips made or just going with customs.


























