Leveling TC

I use the Camco leveling blocks like the picture below, but I find my two sets barely have enough since I have a dually now. I built some trilevel 2x blocks, but again, that's a problem with a dually. I only have 2 which just covers one side. :) For some reason, I tend to need to level the rear more than the front. I've also found that I tend to be lower on the driver side. No, I'm not low in the rear or the driver side according to the measurements I've taken.

One thing is for sure, leveling with the jacks isn't convenient since I would have to unhook the fastguns.