Thanks LBA1999, I don't think that is the problem though. I have had hours on this tractor trying to find the spot and it just doesn't seem to be there. I know what you're talking about with the float and you can tell when your in that mode. This is my second 4720. What they are telling me at Deere is that there is more oil flowing out of the pump then back into it so it cavitates and the bucket doesn't move.
2000 Ford F450 4x4 white with 8-10 blizzard power plow
2009 John Deere 4720 tractor and loader