Drawing off Syrup on Mason 2x4 XL with Blower

[Jolly Acres Farm]

Is anyone else drawing off finished syrup on their Mason 2x4 XL? I have been but I think I'm going to start drawing off close to syrup and then finish on propane. The Mason makes great finished syrup But I noticed on my last long run with the pan already sweetened with several syrup draw offs that my GPH evaporation rate dropped to around 6-8 GPH.
When I drew off a lot of syrup the GPH started to increase again, then slow down again once I was close to another draw off. Is this a common problem with type of evaporator and continuous flow flat pan?

[Jolly Acres Farm]

Anybody drawing off finished syrup?

[buxtonboiler]

This sounds normal to me. the evaporation rate is going to slow down some because the sap is thicker and not as much water in it.

[gmc8757]

Interesting, I used to draw off finished syrup when I had a mason. Didn't really pay attention to gph rate though, sounds like I should have. I think I still would have rather drew off finished syrup then mess w it again.


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[Urban Sugarmaker]

I never really thought about evaporation rate with close to finished syrup in draw off channel. I pretty much always draw off finished syrup. Sometimes a little above density, sometimes below. You can always add some distilled water or cook for a few minutes in a stock pot while reheating to can it.