If you have hydraulic jacks, you can lift the entire trailer by the jacks and it won't hurt anything. If you have the electric jacks, you are lucky the jacks actually lifted the camper. Those electric jacks are not made to "lift" the camper. They level, but bring a wheel off the ground (depending on the weight of the camper) is not a good thing to do with the electric version.
My Montana High Country has the 6 point Lippert 6 point leveling system (electric). I learned right away not to attempt to lift the camper. I always level the trailer first with boards (or a ramp) under the tires (like when I had manual Bal stabilizers) and I've never had an issue with the electric jacks.
For what it's worth, if the jacks have to extend too far, they will stroke out (electric anyway), and then everything has to be reset. It's an awkward process I've never perfected, even after 5 years. So the best solution is to level with something under the tires, build up something under the jacks, and then let the jacks fine-tune the level. You'll never have issues doing it that way.
Yes ... I carry a LOT of lumber with me. I aways have because we just never know what kind of campsite we will end up on.
Previous travel trailer:
Previous travel trailer:
My current collection for the fifth wheel, after I repainted them all one color.
All my "lumber" came out of an old barn that was over 100 years old. The wood was so petrified I had to use a chain saw to cut the 6x6 and the 4x4 and 4x6 and the 2x8 and 2x12 into length. I've been using the same wood blocks and boards for about 25 years now. I just keep throwing new paint on them ever 4 or 5 years.
I do carry a 6 foot and a 7 foot 2x12 treated plank all the time too in the bed of the pick up truck.
Lumber is my friend. I know it's heavy, but it's solid, my trailer does not shake, and the jacks don't stroke out. For me, it works.