I got a Nailbomb for my SG in a swap with TomW for my Riff Raff which was awesome but it didn't have enough power for metal.
I installed it and it's all wired up as it should be, but it keeps squeeling really loud when you crank the amp.
It never happened with the Riff Raff and i tried this Nailbombed SG with 3 different guitar amps and it does the same thing, i have tried re-soldering all the connections but it still does the same thing. It's not like normal guitar feedback, it's a high pitched squeel and it only happens when the amp is at band rehearsal kinda volumes not at normal home volumes.
Anyone know what the problem is here?