So.
I got the TH back and all the stuff is fixed so far.
When I looked at the order it said this:
#3 21CH: AUTOMATIC TRANS
C/S THE VEHICLE HAS A HARSH DOWNSHIFT - LOWER GEAR
S - INSPECT AND ADVISE
WORK PERFORMED BY (SERVICE DUDE)
CORRECTED BY
WORK PERFORMED BY (SERVICE DUDE)
INSTALLED 5ZM57HL1AA :SHIFTER: TOWER 5ZM QTY:1
FAULT CODE U0103. PERFORM DIAG TEST FOR FAULT CODE
REPLACE SHIFTER ASSY. TEST DRIVE. OK
So the issue was when I accelerate from 2nd to 3rd gear. Normally (since I've observed and tested this while driving) I start at 2nd and when it shifts to 3rd it would do so kinda abruptly on the "D" position of the stick. After the service it's been better but I still feel a jerk every now and again but i'm not complaining too much since it's been significantly reduced. I just have to break in the TH and see how it goes from there.