It's in the same place, top of the IP.

1-1/2 turn CCW is what I do, if it gives resistance stop, you might have reached the end of its travel.

I don't believe that the 603 IP will seriously overfuel if you completely top-out the adjustment, my experience has been that just a little visible puff on takeoff is all it will yield with noticably more spunk.

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Gone to the dark side

- Jeff