It isn't the lines, it's the pairings. The pairings are built by a gee whiz optimizer, and the company refuses to make any adjustments to what the optimizer deems most efficient. The problem is, as far as line building is concerned, the computer kicks out mostly 4 day trips valued at 18-20 hours. Combine that with our 4 day off language, and you can see why the lines can't be built above 76-78 hours average.