I have a tandem axel 2001 trailer that uses 2x4 box tubing for the main frame. It has dropped 1/2" to 3/4" at the rear looking across the axels forward. It has spotty surface rust but no serious cancer visible. I think the arch of the trailer is causing bowing of the transom of my Tracker Party Deck boat. I would like to check on replacement trailer costs before trying to straightening it. Anybody have info on a manufacturer in the deep south NW Louisiana, NE Texas area?