I'm not sure what you're talking about with the calculator, but if I put 3 T5s, 2 T6s, and 2 T7s into the "Rat-Shillings by Turn-in" calculator, I get 10120 Rat-Shillings, and if I put in 4 T5s, 2 T6s, and 2 T7s, it spits out 10260, which are the numbers you say are correct. It seems to be working correctly now.