on my 84 rc 360 727 the trans slips when cold, are first start of the day. i changed the fluid and filter, udjusted the bands it didnt seem to help much. after a couple minutes of warm up or rev it up the truck will move, but not normal. when you get it to move it works fine, up shift, down shift is all 4.0. its only when cold. i looked at the other post and faq on trans and didnt see anything on this.