is there a quick way to repair a burned out voice coil?? i have discovered the VC in my peavey combo 115 has slight burn on a small part of it, like little bubbles or something that is causing it to rub on the magnet. Now, i (being cheap) wanted to fix this on the cheap so i just sanded the rough burned bits off. Is this gonna further wreak things and destroy my amp?? cheers.