I have a combi oven MC28H5013 that came to me recently, 2 years old secondhand. I have two issues someone out there might have experience of ... The glass turntable is embossed 'For Microwave Use Only' which seems strange - is this the right turntable? Also the turntable is very jerky going round - can anyone help please. I've given the whole oven a clean but that makes no difference
