It's a broken project. I stopping about Veletech. I get a invitation the night of museums (Kecskemét city) and I take a set (monitor+pc+keíboard and mouse). Here is a steampunk night.
What is the problem with the angle? Can you please explain it more detailed, that would help us to think a about a working solution for your current issue.
If there is only a small angle mismatch you can try to correct it by bending / pushing the frame into the right direction (at the moment it is hard for me to explain this step in english).