I24
I'm really good at posting pics or vids of my formation team as the images are already on the 'net!
The bendix mag has 4 screws that hold the ignition harness into the casing. There are then 5 screws that hold both casing halves together (I didn't check but they appear to be about 1.5" 6-32UNC). It was these that all worked themselves loose. The right mag on the Pitts S2A is a bastard to see as it's obscured by the oil/water seperator, the VACpad oil adapter and the engine mount.
I normally bolt the bare engine onto the basket. Then install and time the mags before coupling up all of the controls, fuel, oil lines and electrics. Removing and replacing mags onto an engine that is all "hooked up" incites my Tourretes Syndrome as it is uber-fiddly!
Hope this helps.
Stik