my bike is a 2001 yz 125 2001 i have had it about a month the bike is 100% stock it hasnt even ever had a piston change which i am planning because i have been riding it alot recently and i have noticed it is feeling a little less powerfull can anyone give me tips on what to change on my bike to make it have a little more oomph perhaps somone can recomend some parts that will improve things anything will help ohh and one last thing i have run out of proper air filter oil so i used a bit of 3 in 1 i am wondering is this oil to thin cos it is nowhere near as thick as the other stufff that was on it before