My wife does not like a bouncy camper. The bathroom and bunk area of our RV was a little bouncy even with x-chocks and the scissor jacks. The rear scissor jacks are right behind the rear trailer tires leaving the back eight feet or more unsupported. I added two more additional scissor jacks near the rear bumper that help eliminate the bouncy feeling at the rear of the RV. I do like that our camper came with larger 30″ scissor jacks vs the more common 24″. I rarely ever need blocks to make up height issues.