I can't for the life of me understand why there would be any difference in the timing of a two stroke vs a four stroke. Please explain that to me.
Provided they have the same compression ratio the flame speed should be the same..
Also the timing should have no effect on pre-ignition .Preignition is caused by too high compression or low octane gas.
If you are timing your engine by turning it counter clockwise(with rotation) and noting when the spark occurs and you set it to 44 degrees I can guarantee you will have a poor running engine.