I am having signal problems when flying nose in.
At about 100m I will have full signal strength until I turn nose in, at which point the signal turns off like a light switch.

There has been no crash and no hard landings.
There is no visual damage or even a mark on any of the antenna on the legs.
I have checked that all antenna are seated properly behind the nose of the aircraft.
I have tried refreshing firmware, calibrating IMU, compas, and gimbal.
I have tried re-binding the remote (both Cendence and original)
I have tried both 2.4 and 5.8 frequency bands.
I have tried both X7 and X5s cameras.
I have tried using iPad Pro 9.7" and iPhone 5se.

Any ideas before I have to send it in?

Hello. We apologize if you're having issues with your Inspire right now. If this is the case since you did all the possible troubleshooting we can do, we highly suggest to send it to our facility to have it checked by our engineers personally.