My sunroof seal comes out easily in one location, making it hard for the lid to switch between popped open and slid back positions. I have a new OE seal. It looks like I just need to pull the old one, clean the inside a little with alcohol or something simple, and slide the new one in. I've read here that using a wood block to seat it correctly is a good idea, and that Windex or silicone spray might be helpful to lubricate the new seal into place. Is it really this simple?

__________________
2003 E320 wagon, ~80k, "Sputnik"
1987 300 SDL, ~160k, "The Pimp Daddy" (sold April 2010)
1984 300 TD, ~200k, "Das Boot" (Demised March 2008)