S4Cruiser
SILVER Star
^^^
I started doing the same years ago and remember the knuckle busting.
Enter the vibrating multi purpose tool. A blade that has no teeth, cut right through the old crap. My work time went from 40 minutes per window to about 5.Ten windows. What a life saver. I save all my old blades. Just a thought.
Now you tell me!! I even have a Bosch multi tool. Sigh. My scabs have healed. Good advice for the next guy!