Use the attitude adjustment knob to move the aircraft symbol up or down to reference level flight. This is done in real aircraft as well.
Cheers
I couldn't even see that knob until the tool tip came up. Thank you very much, High Iron.
Another minor issue - some of the switch animations on the control box to the left of the pilots arm rest don't work. ADF and VOR 2 for example.
I've flown this thing for about 45 minutes and it might just be my favourite vintage prop ever. Absolutely wonderful.