It can be fussy, for sure.
There's a note in my repair manual regarding this accessory...
"Because the vibration depends on the relative motion between the ramp and the base the loader's performance may vary considerably depending on whether the accessory is simply held to the track by means of the track clips provided, or is screwed down to the train board or platform. Rigid mounting of the Barrel Loader to the train platform should be avoided."
Perhaps there's a clue therein?....
There's another adjustment that can be made...the air gap between the armature (attached to the ramp) and the vibrator coil (attached to the base), but unless you know that this has been tampered with since its manufacture, I'd try some changes to the mounting rigidity and using different voltages to find an acceptable motion of the barrels. Adjusting the gap between the armature and coil is not a simple turn of a screw, and (voice of experience) you may consume more beer than originally planned to cope with finding the 'sweet spot' for this gap.
FWIW, of course...
KD
