poly or rubber spool motor mounts

I’ve had rubber ones since 1997.

But, I filled the voids in the with clear silicone caulking. Was a trick Rich Eherenberg wrote about once.

what was your issues?

In 1997, I just replaced the rubber insert and they fit loose even after I swayed the end over. So I had a friend tack weld the inserts to the bracket.... been 23 years like that.