"chunky bit " moved on its location screws on a friends boat, could not open the door............."big bolt on front" is for allowing air flow to keep door glass clear [if your lucky]....maybe this is fouling chunky bit ?.......other problem..no idea..looks complicated...................Graham
"chunky bit " moved on its location screws on a friends boat, could not open the door............."big bolt on front" is for allowing air flow to keep door glass clear [if your lucky]....maybe this is fouling chunky bit ?.......other problem..no idea..looks complicated...................Graham
................................pp...you will have to remove chunky to change the glass....