I am sure that i am not the only person to experience this. I play through the boss metal zone, eq, compression sustainer, and a suppressor with a Jackson Dinkey. The sound i have while playing i love but the problem is that when im doing triplets or anything requiring palm mutes, when i release my palm i get this horrible shriek and i do know what is causing this, it plays fine when i am doing anything else but for some reason it does not like the palm mutes even with the suppressor which is supposed to cut down he feedback(which it does a ton), so any help on how to get that to not happen would be much appreciated here. Thanks.
sounds to me like your compressin sustainer is turned up too much.
try adjusting the levels on that.
or even try turning down the drive on the metal zone pedal. almost sounds like you've got too much drive (heehee)