I called the tax office which has a Lewisville number (thought called the crossroads office) and they said all I needed was to fill out the VRT-141 form. Which the first question is trailer weight. The guy I talked to said that I didn't need to have the weight. But I guess I could call BC and ask them. I thought the inspection applied to bigger setups than mine. Any way my wife will be going the office in crossroads and I'm sure they will want something else that we won't have. Jeeze!!
Inspection applies to ALL vehicles from out of state that are being registered in Tx. regardless of weight. I had a filled out 141 but I hit a snag when there was no weight on La title. If your out of state title has weight you can skip that part. Total cost was $162.75 which included $62.50 of sales tax. As long as you proof ownership you will not have to pay tax.