ORIGINAL: paul5992
It sounds like he is checking the timing on the wrong side of the magnet. You have to turn the motor backwards to get the sensor on the correct side of the embedded magnet. I think thats how I timed my motor someone correct me if I'm wrong. If you go to the wrong side of the magnet the timing will read funny.
I'm not following you here. Seems like I could turn the motor either way and make the magnets align.
Edit...
I just found this (Bob's page? - thanks Bob)
http://www.rcaerobats.net/GAS_ENGINE...onInfo-v.2.pdf
I may have had my chart upside down - I can't remember though cause I did this back in Nov and just now (three long months later) was when I finally had a chance to go fly it again. I'll check it accordingly and hopefully get a chance to start it up today and see. Unfortunately, it only popped while in the air, not on ground - and I'm not going to be able to fly it today. I should be able to figure out if it starts easy or not though pretty quick.