I'm thinking i may just have freak trees. This is also the first year we've owned the house, so not sure if they've ever been tapped before. I also believe that the water table is fairly close to the trees. There's a well nearby and when i checked it in the summer the water was only 11' below grade. in the spring with the thaw i imagine it's a lot closer to the surface than 11'.
I had the thermometer i was using set in the pot while the sap was boiling and it was holding pretty much on 100C. now maybe it's not too accurate once you get past 100C, but as far as i can tell, it's accurate when boiling. I may bite the bullet and by this refractometer, and also use it for brewing beer. I'm really interested in knowing what i have because i didn't expect anything close to this much yield. I'll admit it's a little on the thin side, so i may not have gotten to true syrup.
http://www.amazon.com/gp/product/B0...ue&ref_=ox_sc_sfl_title_15&smid=ATVPDKIKX0DER
f that is no fooling legit than you need to call Cornell and their maple people. They are always looking for high sugar content trees to try to clone and use in the development of new varieties.
Get a hydrometer for syrup. Very easy to use.