Albert: First off, welcome to ECN!!
And thank you for the compliment and the link!
I got my start in the business of projection and projection engineering in Tucson, Az. back in 1982. I was working at the Air Force Base theatre, and had to handle most aspects of repairs and upkeep as well as run the films. (Army-Air Force Exchange Service, or AAFES) had only one engineer for the entire Western United States.
And film projectors are law-abiding citizens of a fellow named Murphy, and would ALWAYS fail with a full house on a Friday or Saturday night. So one has to be saavy to keep the show on no matter what.
You'll find many helpful people here at ECN, on any number of topics, so feel free to browse and join in anytime!