Diet? The way I look at it is smoking is a low carb diet!
This was my 1st shot at these and they came out very good. I wouldnt change anything in the future.
If they ended up the way you like them, then you stick with it. My personal taste is for medium rare beef, as I like my steaks, so I never do beef ribs or short ribs more than 4 1/2 hours.
I enjoy my meat medium rare as well However, I aired on the side of caution and cooked them 3-2-1 to ensure that they would be tender. I would hate to have a med rare short rib that was like shoe leather.
Well next time you will have to give them a try with less time. They were no where near tough.
And "no" these were not foiled.