65 Dart Horn Problems

Here's the Wheel. It's a Superior Products "The 500" from the Sixties I guess.
Makes Squeaky sounds when turning... I'm guessing it's squeezed in too tight somehow.
I made a bushing for the center, replaced the switch and the ring. It's still very sensitive.
Working now but barely, there's a 50/50 chance it will work if I remove it again?

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