My tranny horror story..need help

Well, before I trash the tranny builder company all over, I have to resolve some issues with him. I spent over 3000 bucks for this aod set up, the car has no "pull" it accelerates, but pull is just not there, the only way I can describe it is, it feels like my tires are spinning through out the entire power band. Pulling the tranny, sending it back, waiting or it to come back is just not an option for me.

I was wondering if anyone knows of a reputable automatic transmission shop that will work with me and know what they are doing with transmissions and could tell me what is going on....please help.

Thanks