I've been used Kendon shopping for quite awhile now and finally found one I like nearby. It's a 2005, 3 rail sport/dirt bike version. Seller tells me it will only take 1000 lbs. The newer ones take 1500 lbs according to Kendon website. I've emailed Kendon to ask but no responses yet and I'd like to get this deal done soon if I know there is a way to get that upper 1500 limit via replacement wheels/tires/axle, etc. Anyone know what they did to kick up that weight rating? TIA!