Thanks Gents! Rick,the bent Ventilator has a problem I haven't figured out how to fix. The pipe is one of those that has never seen a pipe cleaner and the airway is clogged. Normally not a problem, but with the way this is constructed I can't get a drill through.Like a lot of bent pipes the airway is not drilled at the same angle the mortise was drilled at,and the mortise is at the end of that aluminum "shank" and I can't get the bit into the airway. Tried going through the bowl--got part way. If I can't get it cleared it may become a tamper!