When I went in for parts to do my 50 hour service the dealer told me that all I needed to do is change oil & filter, fuel filter, air filter and tranny filter. This conflicts with the manual, but other than the typical fine metallics, the UDT oil looks clean. Additionally, when you attempt to grease all of the fittings you run into problems. I have yet to locate a grease fitting for my gun that is small enough to get into the U-joints on the belly and PTO shafts. So, I have two questions; 1. Should I stick with the maintenance intervals in the manual or follow dealer advice ? 2. Has anyone else been able to access the U-joint grease fittings and if so how, short of disconnecting the shafts ?