[DaveWM]

I am not sure of the problem? did the safty glass break during the removal? is that what you refer to as "tick that was it"

if the glass broke, I would assume you simply over did it with the wedges around the edges of the glass. you need to dig out some of the pva, if its too hard to dig out for space for the wedges then you need to soak in water for a prolonged time.

After digging out the space the wedges (wood closepins) are inserted and tapped in until snug then you let the heat do the work.