Hello all, I have a 2012 257B3 with 2200hrs. I have recently noticed a lot of play in the lift arm cylinders when back dragging or trying to cut grade. While back dragging or cutting the lift arm cylinders move up and down roughly an inch in both directions, kind of like float mode but not as pronounced. There is no noticeable drift in the cylinders any other time. I can also have the front of the machine off the ground and back drag and it is the same amount of play in those cylinders. I wouldn't think it would be internal cylinder seals because both cylinders are moving equally, could it have something to do with a check valve or the float mode bypassing? This makes it difficult to fine grade anything, any help would be appreciated.