well dang.. I sure wasnt trying to be a thread killer! it was kind of a rule with machining, if you can do it with a drill press then use a drill press, not a Bridgeport (they cost so much more). I really like Ben's idea and intent, just think simpler could be easier to produce and have a better feel for someone who'd be using them. maybe someone can relate, build and test it? I dont have access to the toys (machines being toys to build more toys!) to whip it up.
another possibility that might be tidier, is using a long section of larger model aircraft cable and "like" control horns, where the cable would drape down instead of a push rod across the glass. the possible problem with that might be some slop between the cable and its sleeve. same and moreso for bicycle control cables, theres adjusters for it, but it might not give the same tactile feel and have more drag than the simpler push rod arrangement.