Ok. What’s the normal speeds through the gear ranges, for your normal AD 1600 engines, I.e, from 1st to 2nd, to 3rd to 4th? Also, what speed do you feel the bus is ‘ comfortable’ at for long distances? I always believe the old pilots saying of “Stay Alive at 55”, although I know it’s good for 60, but it gets loud! ( what engine bay/ seat box sound proofing, do you use, too?).