Had same issue with the FAST Dual Sync and Stealth heads.

I don't know how good the Sniper dist trigger signal conditioning is as I see many people complaining about signal noise?

On my FiTech, I used a lean burn dist and it works fine, but I think the reference angles are different between the Sniper and FiTech so may need the reluctor with the different pin positions to correct the rotor phasing?