I am trying to remove the rear extension and seem to have one that will not budge. I have removed the top cover, cross-shaft, fork, release bearing and sleeve, the speedometer housing, and the rear extension. At this point the workshop manual says use the Churchill puller and the Haynes manual says just tap it off with a soft faced hammer. I fabricated a puller (crude) which put a lot of pull on it before it failed. I have separation of about 3/8" from the main casing but will not go farther. It does not appear rusty but has never been apart before. One of the articles on this (Buckeye club I think) says do not force anything - if forcing is required something is wrong. I have a store bought puller now but it still does not want to move (I could apply more pressure). The Haynes TR250-6 owners workshop manual says after removing the flange to remove a circlip from the end of the shaft. The Triumph workshop manual says nothing about this. I do not see a circlip and I just removed a extension from another transmission and there was not one and although hard to remove it did come off. Am I missing something?