I've read through this thread several times, trying to figure out exactly what you are trying to do. Looking at buying a bigger truck or trailer, or just trying to be legal with your current combo? I'm thinking that if it's just for your current combo, they can't very well require you to have the A license for your combo, yet not allow you to take your test with it. In my state, the GCWR used for licensing purposes is simply the truck GCWR+ trailer GCWR. The manufacturers GCWR does not matter at all.