My dealer told me the 93/94 units were precoated aluminum but had almost 100% failure and had to be recoated. My 96 lost a large section in the front center panel above the window when only 6 months old. They recoated it at Jackson Center and it has held up ok since then. I have now lost a large piece on the center section over the rear window. This trailer is waxed twice and sometimes three times a year.
I also had trouble with the small tape stripe which was up high above the windows on 95 and 96 model trailers. The curb side stripe started falling off in chunks when the trailer was 1 year old and was replaced under warranty and the factory said this was the first they had seen with this problem. The stripe replaced by Jackson Center started comming off in about 15 months and shortly after that the roadside stripe started comming off. My cure for this was to completely remove the stripe.
A/S built some wide body 34' trailers in 95 model year, we went to our dealer to inspect a used unit he had and saw the first wide body in April or May 95. When he told us all 96 trailers would be wide body we decided to wait and order a 96. As to the laws on wide body, the federal law on interstate highway changed sometime in the 80's to 102". To this day there are a few states (7 at last count) which still have an 96"(8') limit on secondary roads. I have never heard of anyone being stopped for being overwidth.