have a Eclipse Ratiomatic RM 100 v 3.1 burner. Installed in a Mammoth rooftop unit. There is a lot of turbulence on high fire. The combustion numbers are within specs.In the burner manual it says that the butterfly damper should open towards the back of the burner. It opens in the opposite direction. I spoke to a factory rep who said it did not matter. If it not important than why did they bother to print it in the installation guide? It would require reworking the damper motor and linkages. Has anyone had this issue?