My 2013 298RE travel trailer has electric leveling jacks, front and rear. The front jacks are on the same gear. They extend or retract at the same rate. The rear are the same. I use blocks under the tires to bring up the "low side" of the trailer until it shows "level", side to side. I then use the front tongue jack (electric) to level the the unit front to rear. Then I put down the front and rear leveling jacks to stabilize the whole unit. These jacks are not to level the unit, only to stabilize it and reduce the motion when you walk inside. I had a motorhome before that had individual leveling jacks. These don't do that. I did find that, after getting the unit level and stabilizers out, putting the slides (three of them) out put the unit "off level". I use wedge shape blocks so I had to hitch up again, raise the tongue jack and front and back stabilizers, pull the unit forward on the wedges until it was level, and then put the jack and stabilizers back out. Not sure if it's a good idea to move the unit but it was only a few inches and I took it easy! Sewer, water and electric still hooked up! This was on a gravel campsite. Most cement pads are pretty level.
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