Power Meters / Powermeters (SRM, Powertap, Quarq, Ergomo, Vector, Stages, power2max, P2M, 4iii, InPower, Cinch)

Fair enough. I guess the easiest way to sort it would be to do a proper FTP test as it should then auto-set the correct value.

Frustrating not to be able to just put a number in though.

Buys expensive kit and coaching.. doesn't test or set threshold power..

Go to your username, Account Settings, Zones tab, Threshold Notifications on the right, click OFF to stop it automatically calculating threshold.

The Threshold Power field is under the Power Zones tab in the same Zones screen.