Originally Posted by
Miyata110
[B]
If adjusting the pivots entails tightening/loosening the nut & bolt that holds the spring, I will give this a try. I'm not sure what "lubricating the mechanism" entails, but it seems like friction is certainly a viable culprit. I will try something to alleviate this, but if anyone could provide some specifics I would appreciate it.
The bolt and nut don't hold the spring per se. The spring winds around it, but is sandwiched in place and held by the ends, one in the arm, and one in the fixed bridge (back plate or whatever).
The bridge is threaded, (remember it's been 40 years) so loosening the lock nut will allow the bolt to be backed off enough to free the arm, then the nut is tightened to keep it locked in place.
As far as lube goes, Weinmann arms ride on nylon bushings, so only a very light oil (if any) is needed.