I'm sure by now folks have noticed that some of their formerly 180 degree servos don't quite seem to go the same range after moving to the MR hardware. The kids were stuck getting an arm they made last year to work how they used to be able to. And after checking their code I got out an oscilloscope.
The MR hardware will put out 0.75mS - 2.25mS pulses; from 0.0 to 1.0.
I'm pretty sure last year's hardware was, or at least was much closer to, 0.60-2.4mS; from 0-255