I have a Fleetwood MH with power gear levelers and the first thing to do is install a set of Hoppe bubble indicators, one for front to rear and one for side to side.
Then my my leveling procedure goes like this.
1. pull in or back in to RV site.
2. look at front to rear level indicators,
3. By looking at the bubble, select the low end. If the front is the lowest, use the front jacks to raise the front one half bubble past level.
4. Then use the rear jacks to bring the back end back to level.
5 Then look at side to side level indicators and raise the low side by using the left/rear or right/rear button until the bubble comes up to level. DONE, most caese it is that easy.
Here is the levels that I use, calabrated
Calibrated levels