How reliable are snout extensions for the fuel pump?

I used on a snout extension on my magnum to avoid having to use an electric fuel pump. It seemed like a great option.

When I got it, I realized it was an idiotic design. The eccentric is not located by any sort of key, it is just held in place by the tension of the cam bolt. What makes this especially bad is that since the cam is rotating clockwise, resistance placed on the head of the bolt by the fuel pump is pushing counter clockwise, working to loosen the bolt. It does seem to work, but it's just dumb.

That said, I slathered the bolt in loctite and slammed it in there because I had no other choice.