was wondering if you can buy just the sliding glass insert and gasket just for insert...if so the glass companies can still use the cord, door laying flat, apply the acid,and cut out a hole in orginal door glass for the insert.......cutting is done everyday in safety glass..i just would like to know if you could get just the insert and at what price?if the glass was flat there would be a lot of sliders on the market that we could use but that bowl shaped door glass makes it special