I've read somebody on this forum saying: "The more you know the more you don't know!" If feel that just the case here! haha! We had a smaller evap and we've always been doing batch boil like this... since almost 20 years... and we felt we knew a lot about syrup boiling... Then we buy a bigger evap... heard about continuous draw... tried it... and now we feel like we know nothing about syrup boiling!

I've been reading other posts, and I'm now pretty sure that my middle pan is hotter than my first one... And I guess that my thermometer (installed on the side of the pan) is not at the hottest spot either...

Anyway, we're going to boil this weekend... and I'll do some investigation on my pans with the hydrometer & thermometer... to see if the syrup is ready in the middle pan before at the draw off!

Thanks for your advices... i'll let you know the result of my investigation...

In the meantime, don't hesitate to continue sending advices!