Ok, you don't have to answer of course. Obviously I can keep playing with it and learn that way. But that DOES kinda defeat the purpose of a public forum like this, does it not?

The reason I asked is that last time I ran the car, I don't recall it doing this, and I understand that the low speed needle is normally left alone once the engine is initially tuned.

This engine does seem very finicky to keep in tune on the high speed needle.

Also I asked because when I ran the car, I kinda snapped a front arm in two and so my runtime and experimenting are on hold for now.

I probably should toss the .21 and put in a brushless electric setup, right? That's the plan eventually....