The fusistors have exploded in several of the Predictas I'll be working on soon so I'll have to rig up a replacement like you did.
I struck out on finding any knobs. Oh well, I'll just go with what I have.
I've moved on to cleaning up the cabinet and safety screen. One corner is damaged but I was able to flip it 180 and it's not as visible.
Here it is after a whole lot of polishing. I used Kat Scratch Out and Meguire's Cleaner Wax on the cabinet.
