Parmakit ignition with Polini 210 alu on P200


I have installed Parmakit ignition, don't have a strobe and hope to understand how the changing timing influences the set up. The Polini 201 need 19 degrees advance ignition. When setting this up the scooter starts but are miserabel, no torque at all bluddering... 

As the 19 degrees are optimum for my set and the parmakit goes +-7 degrees should I then set the ignition to 19-7=12 advance for it to be at 19 in full rpm?

The markers on parmakit stator seems to be 23, 19 and 17 degrees and to go to 12 I don't eaven think the slides allow so I guess I got it wrong. 

Please help