I actually nailed down an issue I've been having, which was a fuel leak under the truck while and after running as well as a very poorly running engine. Wasn't the fuel pressure, wasn't the balmy 22 degrees this morning, rather it turned out to be an injector line on cylinder 1 that was ******* out behind the injection pump. Was fun to get to, had to remove a couple of lines to get there, but pulled the old line and replaced it with another I took off of my older 86 SCLB. Truck smoothed right out after bleeding affected lines, and even bled the others just for giggles. No real improvements after the initial bleeding, but it was worth the effort.
At some point I may just have to source out some new lines when I go through the engine I am "borrowing" from.