in 3rd gear im riding and when i switch to 4th my RPMs just shoot up like crazy like 10k or a lil more.. then it catches.. my bike spun out alittle today on the high way when that happend. So then i thought it was just me so i tried again on the street same thing... only thing is i only click down 2 times to neutral to the bike thinks im in 3rd.. some one i know is saying it might be the gear box oil? any help plzz i just bought the bike about a week ago