I searched site but need more info. Installed fly wheel weight, changed oil, now i have white smoke after starting (like a two stroke). The bike was perfect before I made changes (no smoke). The bike was like new when i bought it from someone with too many hobbies. It couldn't have enough hrs on it to need rings. It had original everything, tires still had nubs. My concern is that it sat in his garage without use. Rings? valve seals? where do I start?