Physical Chess epee point -- screw in tip?

I just purchased two electric epees from Physical Chess in NJ. One
tested OK on the bench but failed to work the first time on the strip.

I have a little training in epee repair and have rewired epees with
standard Frech points. These epees have points with no screws in the
sides of the tip; rather they have one screw in the end of the tip.

I think the problem is in the tip, but I am not getting any help from
Physical Chess -- which told me I have to pay for a repair on a brand
new defective weapon! One screw for the tip and one screwing for me.

Can someone please point me to a schematic for this kind of tip?

Ken
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