no its an internal issue not a DIY

BUT you can go and turn up the modulator pressure a bit and let the trans shift a little later, - than maybe you personally would not like the length of delay on shifting and it just might cure the flair

its a used car lot trick it does not infer its all better but it will give you more / driving before it due for a re build < letting it slide around will wear it out in a hurry -- jz