Chip, I salute you on the engineering and the rehabbing of the collectors! Very well done, all the way around!!!
-40F -40F -40F -40F -40F -40F -40F
...no, in so many ways.....no, for this ol' south Alabama boy who shivers a tad walking out in our current 56F temperature with a tee-shirt on.... -40F
-40F 
