The way you worded it with "insufficient" which by the way means "not having or providing enough of what is needed : not sufficient" made it sound like he needed a higher capacity sensor.
Also on the saving face issue... You are a vendor going pretty low with name calling and saying the guy does drugs?! Weather or not it's true should not be a place ANY vendor should go. You're not only making the OP look bad but in a way you're making yourself look worse by going down that road.
Also Madness, please take some advice here and try to find a TDI guru that knows their stuff locally to try to get it resolved. It seems like a lot is going on with your engine and a shade tree DIYer or forum members can only go but so far