Welcome. On your “lean” I would load it up with a full load of water, propane, gas and gear that you intend to carry and see if it still “leans” or if the lean gets worse. Then go weigh your coach - each side separately, if you can. You should weigh it anyway to see how much extra weight you can carry and how the weight is balanced front to back and tight to left. It also helps you to set the tire pressure correctly.
We had a FE 26HE as well. It was nearly flawless. It also leaned to the curbside at all times and, of course was worse with the slide out. It bothered me when I first noticed it and when I took it to a truck suspension shop for an alignment (highly recommended) I asked about it. It is caused by the coach being heavier on one side (duh!) but I was assured that it isnít an operational issue at all. The chassis doesnít especially ďcareĒ and it handled fine. Itís just an aesthetic thing of the box being crooked. Nevertheless, he said itís an easy fix. Either add a spacer on the low side or, better, add a small helper spring on that side. Either fix would be under $200 but my guy said that if it was his he wouldnít bother. I took his advice and just sort of forgot about it. Iíve since noticed that it is pretty common on RVs and box trucks. Iíd just never noticed before. Enjoy your 26 HE!