If you run out of other options, I can make that output yoke and the support bushing play nicely together. It's not that difficult to machine those grooves into a new bushing, and a ball-end carbide burr in a Foredom rotary tool makes dimples anywhere they need to be. I use a felt tip marker to make a series of dots, and put a dimple at each dot. The shaft doesn't care if a lube dimple is a few thousandths out of perfect position.
Jerry
