If you don,t have a/f meter ,the other method is tune by water temp,while making full pass (read mark sullen's web site) (160) in water box,(170) stage,(180) @ end of pass ,should put you there.to lean no good higher temp, to fat cooler just as bad raises exhaust gas temp.But by all means seek out a professional.It look as though you did a quick fuel conversion,although the kit is good, it cant make every engine happy.....voice of experience ,mark sullen's ended up doing mine 9.90 to 9.63 with his set up .