"Golar Sunex 82 AS2" probably is the original glass manufacturer, not a source of parts
The problem as I understand it is that the ports
As I understand it, it's the gaskets you want to replace - the glass/plexi is ok?
Then, the bad news. You've already cut up one trim ring, so you cannot make new gaskets but re-use the trim.
One option is not to dismount the glass, but caulk all the ports
from the outside. Use very good quality silicone, such as the stuff with a 30 year rating. That stuff has less water
in it and shinks less. When you see how that looks, you may want to paint
trim around the ports to replace the carved out plastic trim.
If that route
doesn't look promising, the next more violent move is to VERY CAREFULLY pry loose the glass, clean up the existing gaskets/caulking, and re-bed the panes. Again, you will have to deal with the trim problem. Concensus on the forum seems to be that butyl tape is a better gasket
than any silicone sealant
. It will also give you a straight edge.
Finally, the most drastic approach may be to replace the glass, which will become the default option if you crack one trying to get them loose from the existing seals
. In that case you might consider making the new panels
oversize, so that the pane itself becomes that trim. That also would give you the option of attaching the panes with screws.
You're kind of into this, whether you want to be or not. Choose a route
, and good luck with it.