I have a 1974 Model 129. Found it in a old garage. After a few months of resurrection and frustation, I got the rascal to run great. Mows the lawn in 40 minutes. Anywho, I rebuilt my PTO. A service guy at a local CC Dealership informed me to merely reinstall the sping bolts to the approximate old position and lock them in. I did this and have had zero problems. This is a simple yet forgiving type of PTO setup. Let me know how it works.
