The more I learn, the less I know! Bought a 1 yr old 29er wheelset with CK SD ISO hubs. I have the front conversion figured out, but need advice on the rear: It`s 142x12 now and I need to go to 135. I obviously need a new axle, but should I go with the CK FunBolts, a 10MM thru axle like a Hadley bolt-on or a 10MM QR like the DT RWS?