I finally finished another tractor project. My rotary cutter didn't fit my John Deere i-Match quick hitch so I re-engineered the linkage to make it work, and it seems to work quite well. I also cleaned up and repainted. Originally it was yellow, but I decided to paint it green to match the tractor. I even ended up with all new decals, for free, from the manufacturer. I had contacted them regarding replacement safety decals and 3 days later had a complete set of new decals.
Only one more tractor project left on my list: straightening and beefing up the draw bar on my lawn roller which got bent up the first season because it was a little under-engineered.