I bought a used motor to drop in my ST90 as mine is locked up. I installed the replacement motor. I installed a new battery. I made sure all connections were connected (that I can see, I am no expert on ST90) If I kick it, I get no spark... I get power, as the speedometer light works, neutral and high beam indicator... That is all that work as I have not checked any bulbs... No spark at all... Not sure where to begin to look... I opened the points cover and the points look ok and open as the should.... Where to start, what to check?