Having calmed down a bit, decide it will only cost me a day and a pot of flox to decide if I can recycle the Heat Duct into something useful. Cut up the Heat Duct with the multi tool and remove any flox that is not where I want it. Trial assembly does not look good, as I had already rounded the parts for glassing.
Go ahead anyway, trial assembling over a box-taped wooden former ripped to shape, and predrilling nail holes where they will serve. Take it apart, flox the heck out of it and reassemble. Promise to throw it away tomorrow if it does not look good enough.
Find a ray of sunshine, had intended to cut the seat belt mount tube to length a couple of days ago, but ran out of time. I can now cut the tube to the right length at my leasure :)