I believe that more testing is due all around for my troublesome TX200. It is finally coming apart (intentionally that is) tomorrow. I received an email from the tech at Air Venturi yesterday with a drawn out diagram for me to follow. This poor tech is wise enough, after dealing with me several times, to annotate implicitly his repair instructions. So tomorrow, bright and early, I'll sit in my gazebo work station, ready to strip down my TX200 and initiate the repair once and for all time. I hear you scoffers, but tomorrow is the day! I shall complete this repair once and for all time. Please be gentle with me, my friends. I'll have my "return to Air Venturi " lable ready to print and return via PirateShiping. I do so hope for a successful repair. Tomorrow is the day.