hello everyone,
I have a kitfox S7 with a 912 ULS , after flying for about 1/2 hour the engine has these instantaneous misses every few seconds or so between 4500 and 4600 rpm.
When I change the power setting it seems to go away.

I've cleaned the float bowls (found some small particles in the left bowl) , I weighed the floats (they're in spec), I've installed carb heat, I've done a flow test, I've checked the fuel filter.

Any Ideas?

Thanks.
Karl