Hi everyone! I have been looking at a 1986 CR80. They priced it at $350 and they said it needs new rings. I am not to familiar with 2 stroke maintenance and was wondering how and what other type of things you would need to do regularly. The only thing I know is a top end rebuild every 100 hours or so on the engine. Correct me if I am wrong. If you can please tell me how often you would need to do it! Thanks I appreciate it!