It seems to me that since a set screw is set in tension but not designed for shear forces a safety mod would be to use something designed for shear forces. I do not have an impact and am unfamiliar with the probe itself, however if the probe is solid and not hollow then a roll pin would be the answer. A roll pill can handle the shearing forces. The probe would need to be drilled through and a pair of set screws could be placed and lock tighted on both ends flush, similar to the video above but all the way through if probe strength is not compromised. That being said and rather than experiment with probe integrity let FX come up with a fix or replacement.
The other machining option would be to notch the rear of the probe and insert a hardened cap screw to interlock with that cutout notch of the notched probe. Again similar to the rear screw that was placed in the assembly from the above video. The second option would be the cleanest option for a possible fix, again this should be something that FX would need to address but could be a viable fix for us in the field if you have some machining experience. There is always a warranty issue on any modification so let the buyer beware.
The other machining option would be to notch the rear of the probe and insert a hardened cap screw to interlock with that cutout notch of the notched probe. Again similar to the rear screw that was placed in the assembly from the above video. The second option would be the cleanest option for a possible fix, again this should be something that FX would need to address but could be a viable fix for us in the field if you have some machining experience. There is always a warranty issue on any modification so let the buyer beware.
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