Another BRNO Question

I have a 600 with that weird "straight stick" single set trigger. While the unset trigger pull is quite light, it has a lot of creep. The trigger, when set, is still long and creepy; not like a set trigger at all. I can't figure out how to adjust it.

I have some Mannlicher Schoenauers with DST as well as a couple of 98 Mausers with DST, a single set Canjar, and some CZ's with single sets. Adjustments on those are pretty straight forward. I also have the de Hass book. That book goes into great detail on how to install the trigger but not how to adjust it.

Any help?