I recently purchased a Jobo CPA2 separately from a CPA2/CPP2 unit. I am having some trouble attaching the cog piece that I assume is the critical piece that connects the unit to the lift. The CPA2 unit came with a magnetic piece attached to the unit. After I unscrewed the magnetic piece from the unit, I am having trouble seeing how the cog piece attaches where the magnetic piece attached. I saw that the magnetic piece has a small metal piece that goes between the magnetic piece and the metal peg on the Jobo. Am I missing a similar piece that goes between the cog and the Jobo? Any guidance would be greatly appreciated!