I did try to add mentioned fixes to Zklopers Build but failed... Skybox broke, Lighting broke, Level load broke, Compilation broke
Ah I just hate Terror Engine...
I also noticed that you only need one lightsource for the yellow beam glitch, the second Lightsource that hovers above the Spawnpoint can be deleted without any Problems.
It´s completly unnecessary... But to be honest I won´t bother anymore, you are right this shit isn´t worth the hazzle.