Hello, this is my first post on this site so I hope I post in the right thread, KLH. I recently bought a pair of KLH Model Fours. The twin tweeters do not work in one of the speakers. From the research I've done It's most likely the caps, not the tweeters. Problem is the cabinets are completely sealed and the drivers are epoxied to the front baffle. I've managed to removed the grills without breaking them but that does me no good in accessing the caps. I know I can cut through the back but I'm w