I apologize for coming late to this thread. If you have not installed your glass yet, please accept and use my comments.
I have installed a lot of auto glass over the years. I have not watched the video linked on the first page of this thread but based on the replies to it, I assume it fits the rubber to the car body, then the glass to the rubber. On a Mini, that is the easier method. I have used the string/rope method mentioned by Firstforward in his reply. That works well on a lot of cars but it does not work well on Minis. Rubber to car and glass to rubber works much better. Just be sure you use plastic pry levers (plastic putty knives from the DIY center work well).
As for lubricants, I have not had the opportunity to use professional rubber lubricants. I am sure they work well. WD-40 does sort of work but I don't use it. Dishwashing liquid will work also but many have concerns about it containing salt. During my last three glass installs I have used "personal lubricant" from the family planning section of the pharmacy. Really. It works VERY well and is water soluble so it is easily rinsed away. It really is the best "over the counter" solution for home glass installers.
The most important comment is that after you have got the glass in the rubber channel, make a lock strip installation tool. Do NOT use pointy thinks like screwdrivers to work the strip into the rubber. You will likely gouge the paint or your hands doing this. It is amazing how much better fitting the lock strip goes if you have the proper tool.
Also see the FAQ on this web site...
http://www.theminifo...ment-resealing/
