All,
I looked into Fuji engines and some of the feedback I got was to make sure the mag is only a business card width away from the flywheel. In other words, loosen up the mag bolts, slide a business card in between it and the flywheel, press the mag against the flywheel and tighten down the bolts and it should be fine. This is what I was told, I have no experience with the engines but this was what I was told... I hope this helps. Let me know.