Here is a quote from another member (thanks transengineer) of the TSB regarding the shift issues. It seemed to help mine out for the most part. I don't think we'll ever get rid of the mds shudder 100%.
Looks like TSB 18-023-11 is a PCM reflash to correct a number of different issues. Here are the details:
SUBJECT: Flash: MIL Illumination And Driveability And Transmission Shifting
OVERVIEW: This bulletin involves flash reprogramming the Powertrain Control Module (PCM) with new software.
(DS), 2500 (DJ), 3500 CAB Chassis (DD), and Dakota (ND)
Service Bulletin applies to vehicles
equipped with a 3.7L, 4.7L or 5.7L engine, a 545RFE or 42RLE transmission, and built before February 1, 2011 (MDH 0201XX).
SYMPTOM/CONDITION: Some customers may notice any of the following:
Technician may find that the following Diagnostic Trouble Codes (DTC) have been set:
a. P2096 - Downstream Fuel Trim System 1 Lean (5.7L engine).
b. P2097 - Downstream Fuel Trim System 1 Rich (5.7L engine)
c. P2098 - Downstream Fuel Trim System 2 Lean (5.7L engine)
d. P2099 - Downstream Fuel Trim System 2 Rich (5.7L engine)
a. Engine seems to lacks power at high RPM (5.7L and 4.7L engine).
b. Shudder or shake condition on wide open throttle stab during downshift event (5.7L and 4.7L engines).
c. EVAP Diagnostic Enhancements. This diagnostic routine will be disabled while the vehicle
is in decel fuel shut off mode (3.7L/4.7L engines only).
d. Audible knock sound on WOT launchs (DJ/DD 5.7L engine only).
a. High engine RPM's needed before vehicle will upshift from 3rd to 4th (5.7L and 4.7L engines).
b. Harsh 1-2 upshift (5.7L and 4.7L engines).
c. Unexpected or busy downshift while coasting between 45-48 mph (DS 5.7L engine only)