Good question Hubse -
If you mean that you should find the best possible position of the camring at full advance, and then set the pin's position, then 'definitely yes'.
If you mean the pin should simply be set to let the camring go as far as it can go in the advanced direction, then the answer would be 'no'.
What you want is the points to open just after the point of maximum flux change, the 'flip' point, of the armature, in the fully advanced position. If you were to set the camring limit pin as far 'advanced' as it could be, then there is the risk of over-advancing and losing the sparks, especially at higher rpm. The magnetic lines of flux 'bend' with speed, so what seems fine at low speed becomes a problem at high speed.
There is also, sometimes, the need for a small compromise to make quite sure that the plunger that operates the camring can not disengage from its notch either at full advance or at full retard. Wear on the plunger, and sometimes on the notch in the camring, can cause this - and sometimes it can happen where a camring has been replaced and the notches cut just a tiny bit out of position.
It won't make a huge difference if the pin isn't in the absolutely perfect place, but the nearer the better!
