[maxwedge]

Originally Posted by bill_si

I wish to thank everyone for their suggestions and valuable insights. I have obtained my new parts and here is my plan.

The new cam button is of an entirely different design. Instead of having a plastic cap that wears on the cover (with the case losing) it has an internal bearing assembly so there will be no rubbing on the cover (unless it fails). If it fails it will be steel against aluminum so I would expect a quick failure of the cover. I hope the new button design is reliable.

I am not going to replace the cover. However, it is available aftermarket at a very reasonable price (under $100 my price, my kid works at a parts store). But since I have a mill and lathe (and I am cheap), I am going to mill the boss in the case down about .35 inches and then drill a blind center hole. I will then machine a new aluminum extension with a mateing shaft for the center hole. I will press and locktite it in and reassemble. If I screw up it will be new case time. The part should never come lose as there is no torque on it with the new button design and there is always pressure on the new extension so it should not be able to come out if it becomes loose.

I think the sloppy chain had more to do with the cam coming forward than the worn button and it seat. The button spring just does not have that much pressure.

Good plan, do it!