We have had 3 R-62,s fom 94-98 now on a 62 and a 72. They have all been very reliable for us, the 96 is the long shoe. The 94 if a cummins could be a 240 or a 260 hp unit depending on build date. For us thre have been no real weak points consistantly, each machine seemed to be unique, other than we carry a spare unloader belt with us as we usually blow one a year until the last 2 years. Make sure the spinner gears are good and adjusted properly, the fine cut chopper makes a nicer cut but is more maintenece and has been known to blow a couple of flails. check the bearings as said, and also check the bushing inserts on the idlers, cheap and easy to replace, it would be a good idea to make sure main bearings on the main through shaft have been changed, we have not had one go to bad but found one starting to spin on shaft. We have had bearings in main seperator clutch go, a strange howling sound when seperator is not engaged not a hard fix, some were machined deeper with a wave washer put in, but there is a two channel bearing available now I believe. The cage, rub bars, feeder chains and sprockets, and elevators have not been an issue and are a visual thing it will depend on the hours and crops harvested. Hope it helps.