I had not heard of his Spyder hate.
He seems to be fine with the flipped R&Ps. When I had him do Bridget's box he was looking for an earlier case for a guy with a trike. I traded mine for a later, single side cover unit. At the time he was also finishing up a 6-cylinder Beck Spyder.
The last trans he made for me is good, and so is the one he made for Cory. The one I'm giving him to work on is already built and just needs the R&P and 4th gear changed out, so I expect he can handle it.