There is a fair bit of "technique" required when installing glass. I have done it a few times, and it wasn't fun. It involved a long string wrapped around the seal that you pull out during installation to help it set. You have to apply a lot more muscle than you expect, and many have broken their new glass attempting the install. You also need a generous amount of water based lubricant (KY for example) to help it into position. As you're applying the KY, just remember, it's not the size of the boat that counts, it's the motion in the ocean.

Honestly, unless you really want to learn about glass installation, and spend a day getting frustrated and possibly breaking it, I'd recommend having a body shop do it. Body shop labor is cheap, and they install glass every day of the week so they know how to do it right.

__________________
1998 E300 turbodiesel

America's Rights and Freedoms Are Not The Enemy!