|Originally posted by fierofool:|
If you've loosened the felt pads on the inside, with the window up, you can tip the window inward, giving a little more room. Get some wooden door jamb and window shims at your local home building supply store like Home Depot or Lowes. You can use them to protect your window and to help exert force against the tool, by pushing down between the tool and window. Using a box knife to remove the rubber of the old dew wipe prior to removal can help with clearance, too.
Exactly what I did.
After you get them out, I would recommend not putting screws back in those hole, or using hex-heads screws if you must.