I liked what a previous poster said about the floor jack and bringing the tank down with the vent attached to it. Once down you can saw off the vent if you want the tank out from under the trailer and then dremel out what is left of the pipe in the tank. One thing to be aware of is that both your grey and balck tanks probably vent through the same line so they are joined somewhere; find that before you drop the tank so you know what you’re dealing with and if you have to disconnect that first.
Recruit help, two people will make this much easier!
We have really enjoyed our Arctic Fox. As others have said they are heavy; we had a half ton Tundra and replaced it with a heavy duty because the half ton was at it limit.
Quality has been really good, we didn’t have the mess that some others seem to have had and I did pull apart under our stove to fix a minor electrical issue. The a/c plugg had slipped out of our converter; I presume because it rattled out.
The only issue we had that actually frustrated me was the propane line where the flex hose and the steel pipe connect together actually broke from fatigue. I think the parts were stressed because the factory didn’t do a very good job aligning the connection; cracking and ultimately breaking. I think it had been leaking propane for some time before it broke which is a safety issue.
Great trailers overall and I would get another one.