Rear Window Gasket Removal?

[HRTKD]

I have a project going on now where the entire interior of the cab - except the dashboard - is sitting in the bed of the truck. I'll be replacing the carpet (too moldy, musty and nasty to just clean), installing sound insulation throughout (including the roof!), replacing the sound system (including wiring I think) and whatever else I come across.

This all started because the rear window leaks. First things first while I'm waiting for all the parts to show up is I need to get the rear window re-installed. How do I remove the old gasket material from around the window and window frame? It's a foam gasket with a wicked sticky residue. I've thoroughly cleaned a 12" section and it took a lot of elbow grease and paint thinner. There has to be a better way!

 

[HRTKD]

I ended up using Goo Gone to get rid of the old gasket material. A little elbow grease was still required but a lot less than when I was trying to use paint thinner.

 

[HRTKD]

Follow up to my original post...

The gasket on the rear window was probably fine and wasn't the source of the leak. Instead it appears the that panes between the glass in the rear window are leaking. This is a sliding rear window and the black panes look to be rotted. I smeared them with RTV and hopefully that fixes it.

 

[killj0y]

Yea i had a broken window and couldn't afford to replace the whole unit as it was the 4 piece slider. So I put in some lexan with silicone and that fixed it for now lol.