For me not knowing much about transmissions other than you put it in gear and push on the gas and go. If you need to go a little faster you give it more right pedal. Well after getting the trailer I noticed it slow to start out. Well it is a heavy trailer so I chocked it up to that and bought a programmer for a little extra power to get me going. I was always hearing all of you talking about how great these trucks are for towing and doing burn outs but I just couldn't do it and figured I was doing something wrong. I never paid attention to how it shifted or counted the shifts. For those of you out there with auto trannys I highly recommend you pay attention in the future to the number of shifts. Trust me I do now After we got the transmission rebuilt with a DTT master rebuild kit we were out testing and fine tuning when we noticed the shifts not right. To me this all felt normal and was ready to go on my merry way but luckily I had some honest guys working it and told me this wasn't right and we found the problem. Now this thing just screams and tows like a champ. This DTT rebuilt tranny is just amazing with thier triple disc converter, shift kit and all the other little dodads in it. I am in love with my truck again. It was pulling those hills along I-40 from NM to California no problem and kept the power to the ground. The converter is nice and strong and aided in the engine braking or like it. I was able to keep it locked up and safely tow down the hills with the 14,000 lb toyhauler and barely hit the brakes even on the long hills. It was like having an exhaust brake installed. IT WAS AWESOME!!!! Thanks to everyone that responded and provided input and a special thanks to everyone at DTT for all their help and getting me going again in a hurry. I HIGHLY recommend them to anyone as they are top notch with a great product.