I finally have all three jacks reinstalled. They are mounted under the wing now instead of the four jacks I previously had on the corners. The mounts I built are heavy duty and run the entire width of each wing. Additionally I added 3/4" plywood the full length of each wing to provide added support. I moved the jack points rearward about 5" to account for a calculated shift in the CG since the A/C and gray tank were not OEM installed. I jacked it up a few inches tonight and it was still creepy although I'm probably a little gun shy after recent events. There was creaking I never noticed with the corner jacks. It did seem the right rear jack was already deflecting forward even with the little bit I raised it. I hammered the foot back straight before lowering it back on the pallets.
I have a question for anyone with experience with truck campers with ONLY 3 jacks. Is the procedure different than with 4? Do I still need to keep the front 4" higher than the rear? Seems level is better for 3 legs. How do you handle jack deflection? My aircraft jacking experience makes me want to hit the foot back straight when I notice it.
Here it is standing on it's own 3 feet. I hope to have it back in my truck this weekend.