i hit some big bumps today as the trails were a little bumpy and man did my back take some hits..my rear bottomed-out quite a few times and really hard ... is there a quick cheap fix i need to know about as this doesnt seem right the sled should be made to take a few dips and bumps with-out doing this..i dont think there is a problem with the supension and i am around 195lbs so not too big as to cause an issue..thanx mark