I have a little CASE XC116. It is from their yard tractor line for those who are not familiar with the non-hydrive ones. It has a Peerless 800 transaxle and I am missing 1st and 2nd gear, and 3rd is hard to find. 4th and 5th as well as reverse work. I have been into the large frame Simplicity and Hy-drive CASE transmissions but never into the sealed type transaxles. Are they expensive to fix? Is there any others who used this transaxle? I have downloaded 2 different PDF service manuals from the web, doesn't look like hard work to take it apart. I also thought of swapping in something hydro. Any thoughts? The tractor has a Briggs 16hp opposed engine in it so power is not a problem.