70s Power Wagon Ignition switch info needed !!

If the engine is "kicking back", the timing is probably off.

Extra volts/amps is allowing the starter to "push through".
Ok thank you that is probably the whole problem / I put more timing in system a few months ago and sorry didn't connect the 2 together because starting issue occured a few weeks after timing change but your probably spot on I will retard timing some tomorrow and report back - thank u.