Hey folks...I just bought another Sennheiser MD421 from a friend that is in need of some repair. It sounds horrible compared to my other one! Very thin, tinny, and just basically unusable! I put it on a tom tonight along with my other 421 on the other mounted tom, and I could not believe how bad it sounded! I ended up using a pair of Audix D2's that sound just fantastic! Here's my question: Any clues on how or where I can get this thing repaired (US only please)? I obviously don't want to spend more then the mic is worth! If it is cheaper to buy another one, then that is obviously the path to take! This model is an old MD421 U3 (the Tuchel connector has been replaced by an XLR connector). Thanks in advance for any suggestions!