Our Amana gas oven began to make a gas odor when it was in operation and didn't seem to be consistently reaching temperature and/or was slow in heating. I have observed the operation a couple times with the access cover removed. The ignitor seems to be heating up normally but when the gas valve opens it doesn't open completely as evidenced by gas smell and failure to light. I can light manually with a lighter but the flame travel is so short that it is apparent that the combustible mixture is not reaching to the ignitor. I then tapped lightly on the valve at which time the flame became normal indicating to me that the valve then opened fully. This is a dual valve that controls both the oven and the broiler. Would you think that this most likely means that the ignitor current is insufficient to fully stroke the valve or is it the valve itself that is most likely the problem? (The valve seems to work fine for broiler operation.)