Allan,
Today I got the magnets installed and the reed switch. I used CA to install the magnets after roughing up the inside surface of the wheel with sandpaper. Worked great. Initially I used CA for the reed switch and added JB Weld to hold it. Thanks for the information earlier.
Instead of using tape to mark the 90 degree spacing, I used liquid 'white out' (yeah, they still make that stuff, only costs .90$ now!) to mark the outside of the wheels. Makes it easy to visualize 90 degrees and finding a 'spoke' for the magnet to adhere too. Then, I marked the inside edge of the driver with 'white out' so I knew exactly where to place the magnet.
Though I have a long way to go on this project, I did manage to check the chuffs/commands/sounds of the ERR boards.
I have a super chuffer, may install it also.
If you want to see more, I'm making this into an FEF-1, click here.