By using the method explained in the CH web site, the meassured timing angle was be 27 +/- 1 degrees. The spark must be the actual indicative to measure the ignition timing angle. The angular position of the magnet with regards to the TDC can't be used to specify the ignition timing. The ignition timing angle is definitely affected by the magnet angular position, however there must be other factors to consider that will impact the time when the spark occurs, such as: the gap between the magnet and the sensor hall, the internal delay introduced by the electronic circuits .The hall sensor triggers the electronics inside the ignition, however after certain time the actual spark is generated, hence the difference in my readings ( 36 vs 27 degrees).
By the way, thanks to tkg, RTK and Keith.
So now I am confident about the timing, next think to consider: I need to review the hand start technique that I am using.
If you have a good hand start sequence for this engine, let me know. Another reason why I want to rule out any possible issues is that those kick-baks really hurt, in my case the effects were felt in my elbow, which by the way now is feeling better.