I bought a Trek marlin 6 knowing it has single walled rims, i got a hell of a deal on the bike and was wondering if most 29 inch rims would work on it, ive found multiple wheelsets for good prices(MAVIC TN119 29ER SHIMANO 6 BOLT DISC MOUNTAIN BIKE WHEELSET) (Shimano MT15 MTB Wheelset, decent?) (revol hardrock 29 wheelset, will specialized work on trek?) and just wanted to know if they're all compatible. They say they are disc compatible, im not sure about axle size, spacers, etc. I do mild trail riding with small jumps but the single walled rims have already shown signs of weakness. Thanks for any advice!!👍