Okay, so I've been putting off repairing the infamous "stuck roof vent" problem that's plagued my C model since the upholstery was redone. It's been stuck in the open position for at least 4 years and I've just been putting it off. Well, I finally decided to take the project so I set aside a full day of wrangling headliners and trim parts and finding the necessary hardware to repair whatever I found to be froze up. I rounded up all the tools I thought I might need, put some music on the stereo, and had a yeti mug full of ice water and started at what was to be a while of sweating in my cockpit. I started by beginning to remove the trim that surrounds the front overhead vents and cockpit lights along with the vent control knob. I removed the 4 small screws that hold it in place and inserted the small allen wrench to remove the vent knob. I decided to just try to move the knob a bit to get to an easy position to loosen the allen nut when, much to my amazement, it rotated freely and the roof vent closed completely. I repeated opening and closing it several times with a stupid grin on my face. As it turned out the back left screw was about 1/8" too long and was engaging the gears of the vent mechanism and had locked it in place. Total hardware needed to repair vent-shorter screw. Time of repair-15 minutes. Sometimes I'd rather be lucky than good.
Don