hi everyone I am working on an old chappy 2stroke. I know its a 75 and that's its an 80 cc (72 to be exact) Ive read they made a chappy 50cc and an 80cc but im wondering what model I have? guessing an lb80 from what ive read but im not sure and I don't know where to find it exactly. anyone that has any info on this old chap id greatly appreciate it! thanks guys