I am converting an existing wood fireplace to gas logs. My problem is getting the gas line into the fireplace.This is my first time doing this and I want to make sure everything is to code. There is a ash door in the bottom of the fireplace that goes into the crawlspace. Would it be ok to run the gas line thru the bottom? I was planning to notch or remove the door and seal the opening after I ran the line so draft in the fireplace would not be affected. Has anyone ever done this before?