Hi, If they are brand new,I myself always lubed them. Are yours brand new? If so make sure they are not being kinked,Try to keep the cables in smooth curves as possible, (2) With the cables unattached to the carbs or unattached to the hand grip,see how smooth the grip turns,It may need lubed on the handle bar. Look where they attach to the handle pipe to make sure they are not unwound a little from when you screw the cable to the lower switch plate housing. I hope maybe this might help you. Head