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I recently did the valve body and associated TSB fix because I had intermittent hard shifting from first to second. Seemed to help, but now have the delayed shifting problem again.
Tranny fluid was changed with the valve body replacement. No debris in the pan when I took it apart. No "varnish". Nothing unusual looking, everything was clean.
I did not adjust the bands.
Thanks for the link.
I crawled under the truck last night and sprayed some PB blaster on the adjustment studs. Then pulled up the procedure on my Ford repair CD. Doesn't look too bad to do.
I'll try it this weekend.