I just picked up my 08 WR450. I purchased a JD jetting kit from you for the O7 for my 08 on the account that they are the same. I also picked up the GYTR kit to block of the the ASI junk. 1. Question: The GYTR kit comes with a leak jet and an air jet. Are you installing these to jets with JD kit or just leaving them out. I am not sure what they do. I have modified the exhaust and taken out the snorkle. 2. Question: The rubber oring that goes on the pump, what is the life expectancy of it? 3. Question: The JD jetting recommendation does it look at the bike stock or with the freebee mods?