First off, sounds like there are more to tires than just looking at them. I'd better review the tire section on the forum! And, yeah, we are sorta on our own looking at the trailer. The friend that the sellers left it with does have an RV -- a regular TT, and he is an electrician, so has some knowledge of RVs. The seller is about ready to have a baby - due next week, I believe - so doesn't want to be too far from home. We offered to wait until after they have the baby, but they want to get this done now.
Their friend is going to have them on the cell phone while we go through the 3023 and Mr. Seller is going to walk us through it. We are very grateful for all your help and suggestions. We are compiling a list of checks from the replies you have given us and from the technical section of the forum!!