Thread: Km/ph instead of Mph on approach to speedcam, how to change?

My Igo Primo works ok now but I have one problem which I can not seem to resolve.

I have selected Mph/yards..... speed warning and actual speed appear in mph but when I come up to a speedcam the speedcam warning is in Km, anyone know how to change this so that it also displays in Mph.

I have attached my sys.txt just incase but im trying to keep it minimal and just use igo program to change items.