I am trying to follow Brad's method for locking NMR when we went to the new LHRS angle (37 deg from 34.76 deg), it's not locking so far. Turning off the regulator and choosing the Hall probe B locks the NMR. As soon as I turn on the regulator, the hall probe switches to the probe C by itself and NMR gets unlocked. I am trying this since last half an hour. So far no luck.