We have tried to run it in slow speed and high speed does not seem to make any differance in high speed it just seems to burn alittle faster. This started with wheat in ND and has stayed until we finished bean so far no trouble in corn
the problem is the mmagnet turns on the shaft the best way to cure this is to remove the magnet and put some emery cloth on the shaft then put the magnet back on then tighten the screw and the magnet will grip the shaft and won't spin causing the sensor to go off.