Replace the bearings and seals in the DD unless you know for sure the DD has been rebuilt. BDX makes a seal and bearing kit you can order from Rec Supply in Saskatoon get the BDX 12 oz oil too at the same time. Whole job takes 2-3 hours and that includes removing the DD from the sled. A press is important to get out and put in the bearings and seals. Do the clutch springs in both the primary and secondary as they are probably shot. There is not alot of parts available for the primary but you can use some of the bushings from the older primary and I think you can still get them from Cat. Check out the skid and make sure the that everything is still straight. Rebuild the shocks if needed and check the A-arms for cracks (they like to break at the most critical times). Electrical is not a big issue but see if the gasket upgrade was done on the gauge cluster, otherwise it can do a bunch of strange things when it gets moisture in there. The gasket can be purchased with a new faceplate for about $10, I think it is too late to do it as a recall. I am sure I missed some stuff but someone else will probably post something else for your to do list. Good Luck and have fun, shop time is always a good time with a wobbly pop or two. :beer;