Ok guys what jet kit should i use with a 4-1 kerker with 2 and 1/2 baffle .. My old bike had Stage 7 but alot has changed over the years.. Also just had the tubes and no vboost .. Should I go back that way again.. Juist got the Bike this past weekend and i know its running lean ..pipes are turning blue..my 86 always ran great with stage 7