I've been reasonably active and it seems every single time (literally) I work anyone on CW using a Flex 6300, 6500, 6700 or whatever they have, they never seem to hear well. Most recent example in the past hour: KG8V in MI on 40CW. I copied him fine. Robin reported running 450W although didn't say what the amp was, but copy "got most, missed some" and all that, with his Flex 6500. Meanwhile, I'm just running an old Ten Tec Orion and my AL-80B amp at 650W output and copied him fine, 100%, never missed a dit. Both using similar antennas (his was a dipole at 65', mine is at 55' but otherwise no real difference). Easy to blame this on cockpit error (not adjusting everything correctly) or maybe local noise issues. But "every single time?" I've never worked anyone using a Flex who heard me as well as I heard them, even if I was running more power than they were. "Sensitivity" on a frequency as low a 7 MHz shouldn't even matter. It can't be that. This isn't a swipe at any operator, it may be a swipe at Flex rigs...but I haven't owned one in years (had an old Flex 5000 years ago, ditched it). Flex owners? Is it difficult to set up parameters to receive CW well?