removing old rubber weatherstrip

I've got some old weatherstrip to remove from between the rear quarter windows and the front p***enger windows. It's broken off inside of the vertical metal channel between the windows. Any advice on getting this stuff out of there? Heat, chemicals, etc?

Thanks

Bryan

 

Hate to "TTT" my own thread, but here it goes

 

exacto knife and a sharpened, shaped, bent screwdriver for the bottom of the channel if it's glued in.

 

There's a bottle of stuff on the house cleaning supplies ahelf called "De-solv-it" that I use to take off lots of different sticky labels and glued on car trim with.