I purchased this unit in San Diego for use in Mexico. I need to change from ng to propane. The ovens seem to work well, but the burners will not burn blue after about half throttle. The person I bought it from stated it did not need re-jetting but adjusted at the controls. Is that correct or do I need to change jets, and if so do you have a conversion kit and manuals for operation which I could purchase. Thanks for your advice and assistance. John Hall Sundance Deli and catering