I have had a 1981 CM 400C from since it was 1 year old. I loved riding it,yet didn´t ride much. About 8 years ago it started acting up due to age and not being used. It has always been garaged. I don´t think the bike is worth spending overhaul fees, yet I have a maual and am pretty good at mechanics. I wish to ask some of the more talented for some advice. Thanks Paul