I am attempting to split my lower case to remove the transmission. I can't seem to split the lower case. I believe there is a retainer plate behind the clutch. I got the 50 mm nut off and the friction and steels but can't get the 28+mm bolt off to remove the basket and get to the retainer plate. Is the smaller nut on the clutch a reverse thread? Do I have to remove the front sprocket to split the case? How about the other gear, I think it is called the starter clutch? (on the same side as the front sprocket behind the case)????? Thanks guys.