Transmission has a very harsh engagement into drive once the trans has reached operating temp and has run thru a shift cycle with TC lock.

When cold or when the truck has been shut off for ten minutes or so, it has an average first engagement but then hash every time after.

2018 2500, a stock with deletes and RaceME Ultra (I know) tuning.

Recently rebuilt by the dealer under warranty, TCM has been reset, and a quick learn has not fixed the issue.

Any help is appreciated.