@wardharris , I'll try calling you at 1 pm ET, thanks for offering to help, and thanks for being willing to talk to my shop.
@kcjaz , overall, I've been satisfied with the LRA. The biggest quirk is that the main tank fill port/tube/connections result in easily tripping the pressure differential sensor in most gas station pumps, so I have to hold it manually at a slow flow rate. Auxillary tank port fills no problem. Someone has likely come up with a solution here, but I haven't spent any time on a fix.
@TeCKis300 , thanks for the write up, and I'm guilty of:
1) Did MOAB last year with my kids, and on the way back to east TN, first had the 4LO light start flashing, and it flashed for a couple hours, then went away. But it came back a month later, and has stayed on. I've been lazy and done nothing with it. But, I went rock crawling last weekend, and without the ability to get into 4LO, made we aware that I need to fix this now.
2) I think I get a good seal, but will clean and inspect surfaces tonight, and see if that works (that would be awesome if does, as I'm budgeting $2k to drop the tank, inspect/repair/replace the evap cannister, check filter, check plumbing, buy whatever new hardware is needed to reinstall, then reinstall)
3) I have likely done this. I'd like to say I'll be more careful, but with having to manually fill the main tank, and auto fill the aux tank, I'm likely to not have a "process" that I consistently do.
4) We'll see what the shop says on the charcoal filter being clogged.