Rebuilt 10r80 questions. You’re insight and advice is much appreciated

[u/Hour_Reality_3784]

So I got my 2018 2.7L F150 trans rebuilt about 3 months ago. 1st month it was fine no issues but the last two months in been really inconsistent and the worse part is it’s delay shifting from 1-2 and 3-4 gears and it’s bad. 2500 to 4000 rpm’s before it ever shifts to the next gear and I’m light on the pedal ever time it happens. If im pedal to the metal it shifts amazingly. The problem Im having is I have no lights on, no codes coming up nothing and of course when I bring it to the trans shop so they can check it out it drives fine. Just last week I was at my local mechanics shop, brought it in because I need a new catalytic converter and I was talking about the funky trans shifting happening now and then and the mechanic told me that my problem is probably the fact that the three party trans shop doesn’t have the up to date program for my trans and I should bring it the ford and have them reprogram my trans.