Gee, let me take another look at this situation...

I am too cheap to get my own equipment or rent what I need. My uncle
was generous and trusting enough to loan me his tractor and tiller
(which he has invested several thousand in), and I broke it.

Now I am trying to figure out some way to butcher this thing and piece
it back together and maybe he won't notice.....Rigggghhhhht

Here is some advice; Go to the local JD Dealer, order the part and
have them install it. One less thing for you to screw up.

Oh, and don't ever ask to borrow anything from him again.