PMDG 757-200 Question

This question is with regards to the Fly2K (not Fly2) 757. I noticed that the autopilot bank selector cannot be changed and the autopilot seem to limit turns to ~17 degrees bank (which becomes a small problem when flying around 240 knots). Is there a workaround or key command to change the bank selector on the autopilot? I checked the FAQ on the website and the docs don't mention anything (if so please direct me to the page). Robert