Originally Posted by GapRunr
I'm heading over to my friends house Monday where the bike is being worked on. I'll get some pictures of the clutch spline and input shaft. The clutch spline was shot, and the input shaft was borderline.
After 22 years of storage the bike got all new fluids, and anything that was rubber or plastic got changed. Tires, tubes, fork boots, seals, etc. Clutch pull was smooth and gentle.
I checked cable adjustment as well. All was good. I've heard that some of the early g/s bikes had soft input shafts, sounds like I got one of those...
I don't think any specific model or year has much to do with it with airheads, oilheads, or K bikes. Personally, think it is clutch hub metallurgy. Whatever it is, it is something that all the above models share.