Our jacks don't seem to extend as far as they used to
We have 2012 Winnebago Sightseer 30A. When we first got the coach the jacks would easily raise the front or rear tires off of the ground to level it if needed. This last trip, they don't seem to extend enough to get the coach level, they stop at a certain point. All four wheels are still always on the ground. We checked the fluid and the reservoir is full. I'm not advocating for tires off the ground, I just use that as reference, they used to go that high, now they simply won't in manual or auto mode. Any thoughts?