Louisiana to Texas title transfer help

So i recently purchased a vehicle and i am trying to get it transfered to my name. Its a Lousinana salvage title. The guy I bought it from purchased it from an auction under an autorepair shop. The assignment of title part has the autorepair shop information and the previous owner signed the seller part. The buyers signature area is left empty.

I have called several title transfers places and they told me i did not have to put a bond on the title. They can just correct the error but did not want to tell me how to do it.

I would like to do it myself because i will get the plates sooner. The title places are saying a month or 2 from now but i need the vehicle to drive to work.

I have done the inspection and have insurance on the vehicle.

Could someone please advice me. I would really appreciate it. My anxienty doesnt let me sleep.