The bike is a 91. Im not getting any chunks or pieces in my oil screen or anything but it might by installed wrong. I checked my sync and it seems right on. Ive had vibration issues from out of sync carbs and it seems much worse than that. How hard is it to check the balancers if i pull the engine? is there a large amount of disassemble or fairly easy to see. Im going to double check the carb sync but im almost sure its not that.