LOL....Just adjusted the bias on one not two days ago, I can't remember....Hahahaha...It could go the opposite way....
they often do on Sansui's, the G9000, 22,33K all go the opposite way...
Perhaps someone else can remember, in the meantime I can suggest perhaps clip your DMM over one of the emitter resistors, and turn it on, (on the DBT) and see if you can adjust it down to between 10-14mV (DC). Hopefully you have an auto-ranging multi-meter so if its high you'll still get a reading...
If you adjust it and nothing changes, shut it down quickly...
You wont have much time before things start heating up, so be quick, set yourself up so you are ready with everything before you flick the switch.
Clip you leads onto the Emitter resistor etc etc, get the amp in a position where you can easily get to the bias trimmer.
If you turn it on and the voltage over the emitter resistor shoots up over 2VDC or something, then you have a dead short, so shut it down immediately.
Let us know how you go...