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Over the last 40 years or so, I have heard nothing good about any transmission shop much less AASHOLE…I mean AAMCO. I avoid transmission work like the plague. I had issues with my AOD tranny because it set too long while my 393C stroker build was in its first botched assembly.  When finally the engine was finally assembled at another shop and dyno’d at a third and dropped into my Mach 1, the tranny would not shift out of 1st gear.  I was recommended to a fella that was supposed to be the absolute guru when it came to AODs.  He had to replace the pump among other things. When I got it back there was terrible vibration on all phases of acceleration.  Point was, the tranny guy never test drove my Mustang to verify his work.  Turned out that the new driveshaft was too short and not properly seated in the tranny and caused the terrible vibrations that tore up the innards of that AOD. Had the guys that installed the tranny been on their game, they would have noticed the shorter shaft and had a new on fab’d up.  When I called complaining about the vibration, I got the runaround and was told that the vibration would smooth out with miles.  I took it to a second transmission shop and they identified a leaking seal but did not go any further to ID why it was leaking. I finally took it another shop that did not specialize in trannys but he quickly identified the problem.  To circumvent year another rebuild, I bought another AOD and had them swap it out and he then identified the short driveshaft and we both had the aww **** moment!  He measured for the new shaft and sent out to have it fab’d.  He also consulted with others and set the TV cable higher than spec for my HP and test drove it a number of times to VERIFY HIS WORK!!!   My precious Stang drives wonderful now.  This all happened early last year.