Powergear jacks

My Manual power gear jacks have a button to control both fronts together and three buttons for the rear jacks, 1 button controls both rear jack at the same time and 1 button controls just the right rear, and 1 button controls just the left rear. The way I do it is to level front to rear first using just the front button and then just the center rear button which operates both rear jacks at the same time. When I do this I only raise the low end first, for instance front low, raise the front until it reaches 1/2 bubble past level, then raise both rears using the center rear button until the bubble returns to level. Now I am level front to rear. Then and only then, I level side to side using either the right rear or the left rear which ever one is the low side.
So relook at your panel to see if you have the same configuration of buttons. The secret as I see it is to NOT level side to side using the rear right or left jack until you have leveled front to rear using all 4 jacks, then fine tune for side to side level just using the RR or just the LR. If you have used just the right or left rear by itself and raised it pretty high, you could have extended to far and possibly bent the jack in the process. Hope I have stated this clear enough. Good luck
One thing more, if the jacks don't extend enough to reach the ground, you should put some blocks under the jack pads to make up the differenc3. Some 3/4 inch plywood pads 12 inches square can de used as is or stacked as high as needed to accomplish this