Quoted from Gogojohnnyquack:Regarding the VUK - Is there a spring directly below the ball holder that helps hold it up off of the switch until a ball weights it down, or does the fork of the switch provide the only support? The assembly diagram doesn't show a spring in this position. I took mine apart, cleaned it, and reassembled but it doesn't spring up like I would expect. I admit that I didn't thoroughly inspect and test it before disassembling.
No spring (This is a photo from my rebuild, I’ve since installed Cliffy’s to cover the wear):