As of today (3/17) my dealer still has the truck (5 days). Spoke with the service manager and the mechanic working on it and they say they are calling the next level up at Ford on Monday to see what can be done.
They had to add 700 lbs. in salt bags to feel the shudder at it's worst, I can feel it with an empty truck and a full tank of HIGH priced gas.
My shudder does not come at shift change, mine starts about 1 to 2 seconds after take off and lasts about 2 - 2.5 seconds. After that all is fine, even at speeds of 75 mph.
While on vacation a dealer in Florida put in a shim kit per TSB 05-13-1 and it did not fix anything. It seemed to worsen the shudder when it downshifts from 2nd to 1st gear when stopping.
Will keep all advised to the progress or fix.