There is an adjsutment but you have to get right inside the camera, removing the botton plate, the clamshell plate, the lens surround plate and finally the top plate. There is a tiny cylindrical metal bit that acts as a click stop for the clamshell and turns the camera on when you open it, that will fall out and get lost unless you do this operation inside a darkroom chemical tray (or the like.) Good luck!
“Believe nothing, no matter where you read it or who has said it, not even if I have said it, unless it agrees with your own reason and your own common sense.” – quote
I myself am made entirely of faults, stitched together with good intentions. -quote