CM1000v2 Internet dropping

Thanks for the reply and help - I had my ISP technician come out and he confirmed everything was fine. We just moved in two months ago with all new wiring. Of course, it's one of those things where everything works when a technician comes, but then they leave and it goes out again. They continue to just do factory resets and confirm everything is good. And then it goes out again later. 

Netgear says it's because not every upstream and downstream channel is locked. But I read reviews that not every channel needs to be locked, just the majority. But regardless, I'm willing to try that idea. Unfortunately, my ISP says Netgear has to configure that setting on their modem. Netgear says my ISP has to make that adjustment. And I get nowhere. 

Thanks for any other ideas you might have.  

NG