There is a powermaster 135 and a powermaster for 180 & 135. here's a video explaining hook-up and operation. Which version do you have? What are you using for transformers?
One simple point is that the TMCC Command base should be off when you want to operate in conventional mode.
I still have concerns about the insulating pin placement for the switches. Do you have the instructions? They are K-line correct? I finally found the manual online to confirm which are the control rails for non-derail. (see attached)
Another concern is track wiring or the power and control connections. Can you sketch a diagram of the power configuration? if you are trying to toggle between a transformer with handles and a powermaster configuration, that could be where the issue lies.
I still don't have a grasp of the track plan.
I read the other post and it still sounds like the wiring is crossed somewhere.
