Checking to see if anyone else has had or ran a cross this issue I'm having. I have a bad rattling sound coming from the trans side cover when in neutral with the clutch engaged, rattling gets loader and faster with RPM increase. When I pull in the clutch lever to disengage the clutch the rattling goes away no matter the RPM. I used a stethoscope to isolate the sound, it's coming from directly behind the side cover. The further I move the scope away from the side cover towards the primary side the sound fades away. I know I have to tear into it to find the problem but just wondering if anyone else has had the issue. I do my own work and have rebuilt a few trannies / installed 6 speed gear sets into 5 speed housings. Your thoughts?