Thanks, I had that sheet already.
Then I should measure that waveform and then adjust the mixture with the screw so I get a 50% duty cycle at idle and at, say, 2500 rpm, is that correct?
If I manage to do so, can I be sure that it will pass the COx emission test? (it does now)?
Should that improve throotle response?

A lot of thanks. That forum seems very useful.

Sergio