12 twists per inch, as stated in my post some GE's Could be trained to be Flight Eng's and some couldn't. The argument on here was about the length of training required and I still maintain a course lasting at least 6 months is required, again as stated in my post.
As for some younger engineers thinking they are better than you, in every trade there is a proportion of small, narrow minded people who think they are better than others, and tend to typecast all members of a trade. Thank you for the excellent demonstration of this in your earlier post.