Our 95 F-350 7.3PS car hauler has an E40D in it, but when it has a load on it, It will usually miss 2nd gear and sit at the limiter for a while until it goes directly into 3rd along with TC lockup. We rebuilt the trans over the winter and replaced all clutches and bands, along with a shift kit. It works okay when there is no load on it but will not hold with a load. We load dads truck on the bed and tow mine on a trailer, so thats around 11-12,000# to tow. Any Ideas??