Thanks for your reply, Mark. The drive collar (barrel) engages the end of the trans tail shaft, but only goes apprx a half inch onto the splines, which was ridiculous, and eventually wears the splines on both the shaft and collar (especially when the "special lock system" comes loose. Other than the poor design in that case, I've found my Fairey to be reliable. My orig collar and shaft had worn badly. I rehabilitated it about 4 years ago. I was able to find another (used) collar that was worn a little, and used that with a new tailshaft to put mine back in business. I figure that it'll out last me since I don't drive it all that much anymore. I am the original owner (1977) and I was 25 years old when I bought it. I don't have any plans to sell it. I guess my son will get it when I'm gone.