Hey Glen: Higher temps on #-1 and 2 would be a normal occurrence since they
are located behind #-3 and 4. Another consideration could be the mixture is
different (leaner) on those two cylinders. If you do not have any success
finding cooling air leaks, you might want to try leaning just a touch. If #-3
and
4 temps rise quicker than #-1 and 2, the temp differential is more likely
due to mixture differences.
It is amazing what you can learn about these little engines when you
have all that fancy equipment isn't
it? (grin)
Lynn
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