Scirocco Register

I've fitted everything now. I only have the lower door trims (big rubber bit that fills in the gap at the bottom of the door - 533821516A) left to do.

Issue is I need to fit them outside, with the current weather I can't leave the doors open with clamps on.

So just seeing if anyone had any ideas? I'm using tiger seal so should only need to hold it for about 2 hours, don't think I can get enough pressure with masking tape.

You might be able to wedge some wood, cover the ends in cloth, perhaps v cut to support the bottom at an angle. I've used double sided trim tape before. Alternative might be a cheap tarpaulin to make a tent if you want to leave the doors open. Maybe a bungee across it?