So I fitted the badass box to my bike, but no matter where I place the magnet the speedo always changes/drops at 10.1mph, isn't it supposed to get to 15.5mph before it drops and shows half the true speed? Also the speedo never gives the same reading as the GPS speedo on my phone, I'm getting sick of messing with it and seriously thinking of ditching it and getting the speedbox 2 instead, that one shows the true MPH at any speed.