I believe the ball studs are the same across the RT/RF/RM range, AEC standardisation! I too have a stock of these.

what is more difficult to get are the phosphor bronze cups they go in.

Remember the pins can be turned through 90 degrees the alleviate much of the wear.

A word of warning, a few years back when i was rebuilding GS67, I had the front axle jacked up with wheels off. I tested the steering lock-to lock. The track rod hit the stop a bit hard and the ball pin sheared. there had been a hair line crack on it at the base of the ball. Good job it happened in the workshop and not on the road.

My bus number (if any): RML2532

Do you have any of the springs by any chance Dave?

Yes Roy, not sure on how many though. Also have a few of the cups but again not sure how many (i'd guess less than 6) & which types.