On a slight uphill incline my driver-side door holder won't hold door open. Searched forums and found nothing for door holder, lots of cup holder hits.
Is it possible to adjust the driver-side door holder to prevent closing on an uphill incline?
I've been stuffing in a rolled up T-shirt to hold the door open but that's too rice.

If its a two door coupe then forget it. The door is too heavy and the compression mechanism would be worn out. Unless of course you order the factory replacement assembly.