Hmm, I must have missed that thread. Oops!
In all seriousness, since I'm not 100% sure what Screwdriver did on this particular radio, it wouldn't hurt to check the bias voltages on the driver, final, and on the PA board. They might be set a little low. The last 94HP I did I set the driver bias at 3.8V, the final at 4.0V, and the PA board at 4.2V. The radio did about 95W PEP on my Bird 43A meter on SSB. I set the low power limit on AM at about 8W, and the high power limit at 20W (deadkey). I never messed around with any limiters, and i did not "volt" the final or add any swing or NPC mods.
~Cheers~