As has been discussed in this thread, we're onto it, and already much closer than a couple of days ago :D
I must agree that the Plazmatics I'm currently running are rather sweet. They seem to be a of a benchmark... But like you said Chris, Steve's put a lot of time into the finer points of pad production, so we're hoping that, with the extra bits and bobs of knowledge I can contribute (including testing/feedback of the pads, alongside Dave), the compound can be finally nailed. Theres certainly been a few interesting discoveries already (Y)
Are the pads set up PERFECTLY square? Without a grind to bed them it, it will take a long time for them to reach full performance. Adding tar doesn't really help - it just acts as a barrier between pad and rim, so they'll never bed in!
I tried some yesterday on Stan's bike (dead, light grind) and they were pretty good. I'm yet to try them on a fresh light grind, but the ones I used were on my uber-fresh (and pretty harsh) grind didn't seem to like it - hence the new recommendation for Konigs on light grinds/smooth rims, with further development being carried out on a harsh grind brake pad.