As title says its fine when you pin it and when your slowing down but when you try to hold the bike at a constant speed its running ruff it does not matter what gear your in or how fast your going it just does not want to be held a a constant speed any help would be great thanks.
Mine did that, get it just around the powerband and made misfire sounds, thats a two stroke for you, mine was running a tiny bit rich though, you might want to check the spark plug and give it a clean, and if your battery is a bit weak then that could be it as well but doubtful, has it always done this or has it just started recently?
