I have rangemaster 90 with both electric and gas ovens. The gas oven will not light beyond the pilot flame. I gave changed the gas failure valve and checked there is 240v present on the GF valve when the gas oven control is turned in. It seems as though there is a restriction in the gas flow. Maybe it is a fault within the gas control knob/valve. Is there a way to test this please? Thank you
Darren, April 2017