Conflicting info on levelling with stabilizing jacks or not.

Look up the specs on your scissor jacks. Some are rated at a certified 6500 lb load capacity. Some have feet that stabilize only and carry no load. I use all four of my scissor jacks to level a inch or two without any problems. They won't bend or rack your trailer because they're connected to the frame, even better than the load points of the axles. Going down the road at 65 mph puts move stress on the frame that the jacks.