I understand your reply and THANK YOU, but did you need to modify the pull knob arm length or need to place some bends in the knob linkage? Which mounting point on the cut linkage picture did you attach it too? I see where you welded a connecting anchor piece above the original mount, is that where you connected too. Seems a bit of distance to the center of the dash where you relocated the knob to that's what I am having a problem understanding. Sorry for all the questions, but I am at whit's end trying to figure out how to keep the vent intact and get this dam heater in and not loosing my vent. I really don't want to strip it out vent cowl and put a block off plate in place. I appreciate any feed back you can provide.