Russ,
Yes this is a good thread. I am more interested in keeping the tough dark brown niter build up off the front pan than making light syrup. No one wants light syrup anymore! Not sure why we are trying so hard to make it?

That will change again in two generations when the new grading system has been set in kids minds they will long for the "golden delicate" maple syrup!
Anyway I wonder if I could branch off of my blower for the steam away, it is very close to where you have your blower connection to the back pan. Come down into the front pan with a smaller manifold and throttle valve and tubes. I have to get under the back of my front hood.
You mentioned about not having bubbler holes near the draw off? I would like to get as close as possible. I would like to have the front pan with minimal niter build up that would be awesome.
Lighter syrup would just be a bonus.
Regards,
Chris