Just installed a new grand voyager insert and I have a question about the outside air kit. I noticed on the voyager insert instructions it says that if you are not using the outside air kit to remove the air plate. Ok the grand voyager it's the same setup but it doesn't say to remove the plate. Also the instructions are contradicting. It says in the step by step to "Assemble outside air cover plate A supplied in component pack" Then in the figure it says "discard outside air plate A". Which is it. Assemble or disassemble?? Also is there any trick to keeping the glass clean? Could these two be related? Maybe keeping the fire from getting hot enough?? Any help is appreciated. Thanks!