Well thanks for the info on the brakes, pretty much what I expected. Some trailers we used at work had automatic brakes that engaged with loss of power. The info from Ryanicc is what I needed and I think the trailer is a early to mid 70's. The article for the Starmaster 6 listed 5.3x12 for the tires and I'll bet that is what it has.
I have some info and about a dozen photos but we are refurbishing our S&B and most stuff from my office is in boxes in the garage. I may have located the box with my Portable DD and I'll look after I get back from the paint store.
Thanks again and any more info would be great.