hi guys im am having a trouble with the cylinders on my c5000xl combilift when in either position all three wheels will creep open and cause the cylinders to move out. i have changed the rear cylinder seals in another combi that had the same issue just with the rear and it sorted it out as there was a bypass fault. so i decided to do the same with the one i am having trouble with now. pulled apart the rear and found it had the same issue so replaced the seals then moved onto the right wheel cylinder and found that the seals where also flogged and noticed that the 2way bleeder valve had been touched. i had a hand putting it back on with the mechanic that has delt with them before and set it back in when we set it in all wheels were faceing forward it was hard to get in so we jacked it and faced the rh wheel at a 90. once we started it to do the purge once we started to turn the steering wheel through it was impossible to get it to turn but after a while it came right abit but the wheels still creep. any ideas ?