I've only ever cooked with an electric oven. I've just moved house and the new house has a gas oven. I've tried my very best but I just can't seem to get very good results. I've tried leaving it for a good 20 mins plus to heat up first. I rotate the trays during cooking. But everything seems to take twice as long as it should and things like oven chips just never seem to get crisp. Is it me or is it the oven?! It is a stoves brand which I thought was fairly good? seems to be in good condition, it looks clean and well maintained, just doesn't cook very well! What else could I try or should I admit defeat and look for a new oven?