This is arguably a rant, however short: if using locktite to secure the knob to the shaft, make sure you don't want to remove it any time soon....or maybe at all....unless you're a 'King of Crush'.
I had to remove the PCB, use a screwdriver on the bottom of the shaft, while holding the knob with one of those rubber 'lid helpers', and even then I had to work the thing back and forth in spots.
This was on a bat top, where the shaft is thicker, hence larger threads to work past. On my ball top, I've used plumber's tape, which works great.