Just to follow up. I replaced the problem injector with a rebuilt Bosch (put my new nozzle in there instead of the Bosch it came with). Popped perfectly and held great pressure (held solid at 1500 PSI long afterpopping).

Car runs well now, but a bit more smoke than before. A bit more rattle on startup for sure. Settles down after warming up.

One thing I wonder about is the leakdown on the other 4 injectors. They all pop perfectly but after 30 seconds they have all dropped down to about 1250 PSI. Thoughts? It seems a small price (~$200) to get rebuilt injectors if leakdown means that much to the running condition of the car.

(FYI-I'm soon to perform my first purge and replace the motor mounts.)