Wait a minute, this is a new tranny. Gezz, I miss read your first post somehow.

Here is the deal, your frictions and steels also known as clutches are too tight or your band is not adjusted with enough clarence. I am thinking that they are dragging. What will happen if you drive it as is, they will get looser, hehehe and within a month or so, it will be just fine! Someone installed one too many clutches in the 1-3 pack.