Setting the DC balance is very easy and the same for the 1.6 and 1.1
First image: Connect your DMM red lead to pin 2 of Q1 and the DMM black lead to ground. The buss is a perfectly good place to attach.
Set your meter to DC volts, use the 20vdc range if your meter is not auto-ranging. If using 24v PSU, set meter to 200vdc.
If using 19v PSU Adjust the pot in small steps to get 10v. A few tenths off in either direction is nothing to worry about. If you are using the 24V power supply, adjust the pot to get 12V.