TOPIC: Foggy plexiglass windshield

Having an issue with a foggy Plexiglas windshield. I tried the search button but it doesn't seem to work properly, at least for me.
The windshield is 57 years old and sat outside in nature's elements for at least 31 years that I know of. Scratches are not the problem, I've buffed them out. The problem is the material itself seems foggy. I've used a heat gun on a section and it seemed to clear up the problem but it's so touchy that I put a small 1/2" burn mark in an area and then decided there has to be a better way. I've been wondering if a steam gun would clear up the fogginess without burning. I've used the Nexus 3 part system and it was ok for the scratching, I've used McQuires Ultimate polish with a machine and that put a shine on it but it's still somewhat foggy.
If you look at the picture there are two areas that stick out more than the rest. One circular just left upper of the helm and the other about a third from the left.
Any opinions?

try cutter, the bug spray. Works on foggy headlights, cheap and worth a shot.

Will, do, thanks.

I have heard that more than once before related to cleaning up foggy/milky looking headlamps. I have a spare one I can afford to experiment with. Keep us posted. That would be great if it worked for you. I would probably forget to cover the paint and then get overspray on it and mess that up. Glad you have done a few baker’s dozen boats before!