My knowledge is limited about my bike so I have to ask what a variator is. I don't think it's a belt drive. I beleive the guy that has it right now replaced all the fuel lines, cleaned out my tank and carborater. Another guy I took it to last year made the holes in my exhaust bigger without telling me he was going to do it. It got louder but not faster. What's the best way to check for airleaks? I apologize for my ignorance but this is how a person learns I guess.