When i got my skis, i was a mere 120lbs and probably about 5'4 and an intermediate skiier, the shop set my bindings at 5. I now weigh 155 and im 5'9 and an advanced-intermediate skiier. I went on a few online DIN calcs and one said my din is 7.5 another said 7. So does that sound about right?
Go get your bindings retested. An online DIN calculator is one thing, testing your actual binding with your actual boot is another.
It could be right but not getting a calibration done could be very dangerous. Your ski boots with the binding could actually make your DIN settings have to be readjusted whether that is to a higher or lower setting and it may not release when you want, either you stomp a jump and your ski just flies off and you eat garbage, or you eat absolute crap and your ski doesn't pop off and you get yourself injured that way. I'd say 1 in 4 skis I cali I have to readjust.