Hey all I have a 2007 Honda Rancher 400AT and installed a power kit consisting of a k&N filter, Outwears pre-filter, and the Dynojet jet kit. As soon as I installed the kit I started to get problems with the engine surging at about 3/4 throttle. I took the carb apart and cleaned everything and double checked my jets and sizes and its all good. I did find one strange thing though, as soon as I clean the filter and install it dry with the pre-filter the thing runs great. When I oil the filter, engine starts surging. Anyonme else experience similar problems and can I get away with not oiling the filter?