Okay, I got a new job (Yeah!) but a majority of it is spent on my own (somewhat good) working on 30 degree Colortrans 5/50s, which I have never used prior to today (bad). I'm learning with them, they don't seem to very complex or different. The one thing I have a question about that I haven't seem to figure out on my own is my lighting designer wants them to be 20 degree, which apparently if you insert a donutlike metal piece into the 30 degree fixture you can achieve. I was told to take the lens barrel out and insert the donut into the back of the barrel, the question I have is does the donut piece just rest on the barrel or does it need to be secured or does the donut piece get inserted inside the lens barrel and not on the outside of the barrel? Has anyone worked with these lights and can help me out? Also kind of on the same subject is there a place to find a User Manual or other information on the Colortran 5/50s? I have a quick datasheet that quite frankly does me no real good. I'd like to learn more about the hardware.