Sounds like just what I do Jay!!! Except I get the 'final' models from the design Engineers and change them on the fly. Though it has been easy in the Metro area weather wise I have the distinction of doing what you do in 50°c heat LOL.
I can see similarities however in the way you have to go over the data...even when people supposedly do a good job...there are always glitches.
Nice insight on your profession though mate...interesting indeed.
cheers bullet
bullet1968
"A Darkness at Sethanon", a book I aspire to model some of the charcters and scenes