Hi so I got a Honda lead scv 100 it's the 2007 model, bought this year with less then 1000 on the clock now has 3600. It's never had a service done on it and I have done some stuff like changed the oil, checked air filter, spark plug etc I know I have to get the valve checked and was looking at some advice on what service I should get for it considering the age of the bike etc Any advice will be gratefully received