This tractor had some funny powershift problems about 3 years ago, so we split it, and checked out the powershift, put some new parts where it needed some but didn't really find a problem that accounted for the symptoms. haven't really used it since. NOW it wont stop the geartrain when you step on the clutch, but once you weasel it into gear, it works - more or less correctly. Today we put the gauges on it and the only thing we found is NO pressure on C3,in any shift position or clutch position. C1, 2, and 4 all read correctly. To my little mind, the symptoms don't agree here. Anybody know what's going on here??