GPTOM,
I don't have direct knowledge of the replacement beam specs. Your best course of action at this point is to refer to the photos that I sent to KD and which he posted a few posts up. I included a rule in the pics as a guide to scale and orientation. If your two mounting holes for the micro switch are in a like or similar spot, then it would stand to reason that the switch position as currently placed on your loader is probably not the reason for your unloading anomaly. Again a vid or pic would be helpful.
John