So I've had this bike for almost a year and this has always bothered me, BTW it's a 48cc 2 stroke Grube Skyhawk on a Schwinn Searcher just in case you were wondering. It's hard mounted, as-in no rubber or anything in the engine mounts. All is well, I check it regularly and nothing is ever loose, but after a 20 minute ride my hands tingle from the vibration. What can be done about that? I was wondering about some super cushy grips to absorb the vibration. Is there anything out there like that?