need to rig the floor vents open

[ashedd]

85 300TD(winter car)

Well my hvac has a major vac leak somewhere so I unplugged the vac line to the system. The leak was causing other vac problems. So it's on the default defrost only with outer side vents. The problem is my feet are cold. I need to know a quick way to make air come out the floor vents. I am not going to track down vac leaks this time of year so that will have to wait. If anyone knows a semi quick way to force a door thingy open to allow warm out of the floor vents please share.

PS. I want to avoid removing the dash and stuff... too cold out for that bs.

Thanks