Hi everyone i'm looking for some help on my white 105. Just had the injection pump redone now i'm digging into the hydraulics that have been giving me problems before hay season gets here. The problem is that the hydraulics heat up as the tractor runs. I've read through several posts on here for the same issues and I've done a few things so far but no luck. I've checked pressure at the remotes and I have 2200 psi. I took the relief valve out and cleaned it up, it was pretty clean but I noticed the shims were a little beat up so I put in some new ones and added 3, there were 4 in there already. I've read about doing a case drain test to see if the main pump is bad but i'm not sure exactly what line you take off to catch the fluid? I have an IT manual but it doesn't give a lot of detail on troubleshooting the hydraulics other that the protractor test to check pump stroke. The hydraulics work fine and I can run the 660 baler all day but as things heat up the gate on the baler gets jerky and slow. any help would be appreciated, thanks