2 of my 4 burners seem to have a bad air/gas ratio. When I turn them on I get more of a lazy yellow flame and a hint of gas. It is the 2 front burners, the back burners work fine. I checked the tubes and they seem to be clear of any obstruction. I have searched the web and not able to find this problem anywhere else.

Kitchen Ranges - Dacor - Preference RSD30 Gas Kitchen Range