Not getting email alerts to these posts, it seems and not like I'm ignoring potential help here.
Well, it does sound like that's the only way and with drilling out the rivets. One could be right about not being able to help things much, although I did have a loose one once and after cutting back and resewing, which required complete disassembly, 13 turns from scratch, sure straitened it up and still is on my old coach, Doesn't pool water like our newer one, either, but could be that the REV sits more level, too. Still trying to figure out manual operation of the jacks, so maybe letting it down or up a bit in the front and an inch or two could do wonders for getting rid of water, wherever it may be.
Back to adjustments, I'm thinking that the main manual slides can be tightened by turning the arms and after disconnecting them from the coach body of course. Gonna take a couple of people and a couple of ladders for this though.