Arrived on site and inspected Gas Fryer unit and found evidence of incomplete combustion. soot in burner tube. cleaned build up of soot from unit. checked manifold pressure and found to be a little low. made adjustments to bring it to 10wc. cleaned venturi tubes of debris and checked to make sure orifices are clean. once reassembled I had improved flame quality. did also observe baffles in unit to be in poor condition. will quote replacement parts for unit once parts are identified through manufacturer. also quote replacement of unit if out of warranty.