I have a RWA off an 84 model l3 on my M2 and finally this year had bronze bushings put in the pivot jounts. I beleive they were abused and worn out when I bought the unit 6 years ago. Otherwise it has been flawless and the best money I have spent on the machine. I would never buy another machine without RWA unless it were a sweet deal and a RWA unit being added in the immediate future. As far as maintenance, grease the joints, keep good lube in the hubs and good hydro oil flowing and they should run trouble free longer than anything else on the machine. Good luck