I just pulled my bike out of storage and fired her up. She warmed up well and idiles fine. The problem is when I have her on the road to excellerate she jerks and wants to stall, when I roll back the throddle. This will do it in any gear and it is hard to get up the speed to get into 3rd. Is this a throddle problem or a carb problem? I just put new plugs in, I took off the air filter(little dirty but shouldnt clog flow), there seems to be a film of oil on the filter cover which concerns me. Any and all help is appreciated.