i can do it also, send me the drum and i can put a bearing on it. there are 2 ways to do it either bearing that stays in the case. or a bearing thats on the drum. i kinda like the one on the drum better.
the rz shift forks from the old days had a rotating pin on the guide pin that went in the drum. UNFORTUNATLEY they were discontinued many many years ago and replaced with banshee style shift forks if you order an RZ shift fork you get a banshee shift fork..