We have a 1992 FLHP that has twice now stripped out the splines on the inside of the pully and there is no visable wear on the transmission out-put shaft. The last time about two years ago the new pully fit snugly had to be tapped on. The lock-nut was install and torqued to factory specs. The locking collar was installed and torqued. Now the locking nut and lock collar are damaged beyond use. I have never seen anything like this before. Can anyone help?