[Wheelie]

I am anew member of the club ,and wish to participate. I have recently purchased a Cub Cadet 105 hydrostatic trans . I found the wear button to be missing and the thrust button has worn out the the shaft clutch. I am wondering if I could fill in the old hole and then drill a new one ?
Any advice would be helpful as it is my first problem. The Kohler engine seems to run good and I also got rototiller and snow thrower plus the grass cutting deck with it. I find that 105 info is sketchy any help would be nice.
Thanks

Wheelie