Looking for the knob on the inside of the pilots door for an M5. Called Maule Parts but they aren't answering and their voice mail box is full, they just say to send an email. Looking for another source.

10-32 threaded ball. McMaster.com or Amazon.

I have some!
I just finished installing the new door latch system, I’ll go dig them out and send you one.
You can pm me the details.
Carl