***** UPDATE *****
I went back to Szmidt's both yesterday and today hoping that the first sandwich that I got at the new location was a fluke.
Just like my first visit, I found the service to be excellent. I got a seated right away and was greeted by the waiter within minutes. On yesterday's visit I went with the "Greg"; a grilled roast beef sandwich, with onions, peppers, portabella mushrooms and provolone cheese. It was served rather quickly and this time the sandwich was every bit of the quality I've taken for granted at the Greenfield location. The fresh bun held up well to the heaping serving of roast beef. It was truly delicious.
Today I had the "Szmidt"; a grilled pastrami sandwich on rye, with sliced caramelized onion, provolone, mustard and pickle. Just like the Greg it was piled high with meat... almost too much! The pastrami was very tasty and the onion and provolone compliment it perfectly.
As I suspected, the sandwich that I got on my first visit must have been an anomaly. I can see myself coming back here often.