As Stated check the clutch first. To test the hydrostatic pressures it looks like you will need at least 1 6000-10,000 psi gauge (I would lean away from a 6k psi gauge and go towards the 10k) I would use 2 in each P1 and P3 port and a 800-1000 psi gauge in the P2 port. From what I can see...