Charlie, I didn't consider a newbie was here.
SP really SPFC means the side pull full crank Victa 160cc two stroke before the all new Powertorque half crank.

I have recently read rust on the faces of the flywheel magnets and coil does not affect spark performance.

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!