Yup it was the low speed needle.

Now I can get reliable flights...

I ended up removing the pin from the limiter.

And these things are sold as being pre-adjusted from the factory! Ugh...

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Anyway, now the problem I have is that the low speed needle "walks".

With the heat of normal operation (no it's not too hot), the needle will turn fairly easily.

With the vibration of the motor added to the mix, the low speed needle tends to "walk" now.

Any suggestions on how to firm it up a bit, but still let it move?

I wish Evolution would do away with these limiter collars on everything except the PTS engines.

They are more of a nusiance then they are worth.

Can anyone suggest a replacement carb for the 1.00NX from another manufacturer that would work, (and hopefully not have this problem)?