I don't want to eliminate the TC lockup. I just want it to wait until about 35 or 40mph. I was hoping for a quickie fix
but, apparently, Ford's got that TC lockup inextricably linked to the AOD's workings.
I think I fixed the shuddering problem, tho. I dumped at small bottle of Lucas fuel injector cleaner in, ran it hard on I-75 for a few miles, OD off and both Flowmasters bellowing all the way!
The engine has smoothed out considerably at speeds below 30 and with that friggen TC lockup engaged!