Ugh, I'm starting to have a few regrets of buying an Eagnas, but then again it was my only chance since I live in Italy. So here's my problem: I use the calibrator on the machine and pull: it's off by 10%.. I take off the machine cover to calibrate, as the manual says, try a pull without the machine cover: tension is dead on. Try it again at different tensions: still, dead on. I put the cover back on and again, THE TENSION IS OFF BY EXACTLY 10%!! How is this possible??