Honda traditionally makes the speedo read high. Indicated 75 is actually 70. 45 is 43. Just get use to it and save your money on a "speedohealer". All 3 of my valks and my '05 wing have been the same.
My bike is a 2000, going by the sat nav it bang on. Just can’t see it at night. I’ll try the LED way first. Would rather have a big number readout.
Thanks