Hi,
know this is glow section,
Just could not find FG-40 specific thread ( there are fg20,fg21,fg30,fg60,fg90...
)
New from shop, broken in on stand, all ok,
backfired few times, bit my finger once, pretty nasty habbit(comparing to all my other engines that dont do that)
Since than is pretty hard to flip start it, mounted in plane and trying to fine tune it for maiden.
Could it really be that it was all it took to rotate hub on shaft and mess with magnet posotion hence messimg timing up?