Thanks Dervish.
I've still got to get through the upper bead of Mastic. The only knifes that would fit were snap off type which all "snap off" I'm more than frustrated with this.
I'll go into town and buy a cheap bread knife or the like. Now that you have me thinking, a fishingfillet type knife may be an option as well.
Thanks again mate, I just may be able to get that window out today!
Best wishes.
Ken

