Hi, just joined the forum today and looking for some help with my 135 hydraulics. With the restoration nearing completion, I went to try the hydraulics. My shop manual says that if work has been carried out on the hydraulics then valve synchronisation should be carried out. I had replaced the shaft bushes and the quadrant so with the tractor at idle, quadrant inner lever at transport and the outer lever at mid point between the two sector marks, to move the control lever forward to depress the pick up arms. When I moved the control lever forward there was a very loud bang. I switched the tractor off and saw straight away that two studs for the hydraulic cylinder had sheared and another nut was split. With the lift cover removed I could see that the cylinder was not flush with lift cover surface. What have I done wrong ?? Any help would be most appreciated.