Cessna R/TR 182 Pilots and Owners

Looking for tips/advice removing the window hinge pins to replace the windows. The fixed hinges looked "crimped" slightly making it very difficult to remove the pin. I'd appreciate any help or tips to removing the pins without damaging the fixed hinge or window frame hinge.

Also curious if people remove the door from the airframe to gain better access to the hinges or if this can be done with the door installed.

thanks all,
Chris