Dennis...For some reason I've wanted to put a heavier spring on my 100 I'm redoing. " I know I've mentioned that several times in thre past " lol Anyways,after to talking to several people with exp. with that I've decided not to go that way, I am going with a new drivshaft,clutch disc &going with a split locking collar on it. I do want to add a few shims to stiffin it up just a lil bit more.Should I just add a xtra washer on each side of the spring? I know I dont want to overdue it and cause more issues down the road with the T.O. bearing , Since I have the trans/rearend out of it , would you reccomend replacing the shift detent springs , I do have the axles pulled ,front & rear cover plates along with the shifter and reduction housing off also.So what I'm getting at , it wouldnt be too much more work to swap them out. I think it was Vogel I saw them for sale , there a lil stiffer then stock. I'm sure that would make them a lil more of a pain to install , It sure is nice having a place to go when you need advice or help. Much appeceiated , thanks