Additional Slideout question

[lensmanicu]

When looking at each end of slideout the front end looks level while the rear end looks to be slopping slightly down giving the impression it might be slightly twisted. From the inside of camper the gasket at the rear is fitting snug until the last foot or so. Further when you lift the rug apron the particle board at the bottom under the coach is higher then the living room floor while the other end appears to be level.... So if I was to put a six tun jack under the main support beam the one with gear track on it and lift slightly do you think that will pull every thing into alignment so I can tighten the bolt at the end. With out damaging anything. Or do you have another suggestion. Please advise.