so i was hopin someone could help me here. i hooked up my system last nite and my sub is catching alot of feedback. i guess it could be a bad ground, or rcas, or the fact that my stock speakers are stock amplified. i wanted to get someone or a shop to check it out and run a 0 ga. power wire instead of the tiny 8ga. i have. can anyone rec. a good shop that will not rip me off.