I'm hooking up the ICO to the roadbook tower today. I could not find the magnet that the stock ODO is using as a pickup. Is it one of the bolts that holds the rotor on? I used a metal grommet to test each bolt to see if there was any magnetic activity- but could not find any difference in them. I'd rather not mess with epoxying a magnet onto the wheel. Anyone have any advice? or am I missing something.