PCM problems or reflash?

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Merc1973

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Im back and have some questions about my trans. FYI, I it replaced with a reman unit from RockAuto. Been great so far. I do notice some things that don't seem right. It was slipping bad from 2-3, thats why i replaced it and it was original at 217,000 miles. The PCM adapted after about 20 miles of driving to firm up the shifts. Im now at about 226,000 miles. However 2-3 still is slow (but doesn't slip out) with delay just like before, more noticeable at light throttle, Still can feel at WOT but shifts more firm. Shifts from 1-2 feel very firm and positive.

Does my PCM need an update flash or is the module needing to be replaced?
 
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