Hello everyone. i recently picked up a Z50, CT 70 and CT 90. my Grandfather bought all 3 of these bikes brand new in 1971, he used them for several years on his farm and then parked them in a barn where they sat for over 30 years before i picked them up last week. the CT90 is the most complete and I have already torn into it to start the restoration. Unfortnately it will need a new piston and cylinder as it obviously ate some dirt before being parked, but other than that it is in pretty good condition. I am a competent mechanic but i am new to these bikes so any input/advice is greatly appreciated. I look forward to hearing from you guys and working on this bike more!