Ok, not to make you feel bad, but I had a 99 f350 7.3L (not the one I have now, the one before it) and I had the tranny flushed at 130,000 miles thinking I was doing some good for the truck.... well 2 days went by after the flush and the tranny blew. The thing just wouldnt move and inch. Before I did the flush it shifted and ran great.... after, well not so well. I swear the flush caused my tranny to go prematurely, I should have never flushed it, I bet I wouldnt have had to rebuilt it if I left it alone.