I Find HEAVY tension to work wonders on the primus system. standard driver pins reacted well with all the primus locks I have encountered as well as I find it easier to control the finger pins under heavy tension. I 100% agree with XEO's findings, my pick looks similar to his (album
http://imgur.com/a/W8vIr). I have not yet found a primus that alternates between finger pin and driver, if you found one GOOD LUCK. I have not found any difference in CW VS CCW I have always found the top stack to bind first.
my technique as follows:
1. Pick top stack. get slight core rotation signifying top stack picked (standard drivers so I would expect a false set feeling to be picked as apposed to spools)
2. crank down on tension (helps to find the binding finger pin)
3. slip the finger pin tool under each finger pin, as centered as possible tap each finger pin as to slightly lift them, if they dont bind nothing to worry about as the spring will push them back down
4. Once the binder has been identified decide weather to push or pull the finger, I tend to push the finger by rotating my pick slightly CCW, hook on to the finger and pushing the pick in to the lock further. then slip the pick under the pin center lift slightly and then get back to the finger and hook the finger with the pick and pull towards you sweeping the pin from full left to full right. then repeat the process.
5. At this point you will either set or over set the finger pin, you know it is set by either a sharp click or a small movement in the core or both, you may even feel it. If you have overset the fingerpin release tension very slowly until you hear a small click, if you leave your fingerpin pick in the lock you may feel the fingerpin hitting the pick. then repeat step 4.
I have found after 2 or 3 pins are set a noticeable amount of rotation happens on the third or second set pin, just continue finding the binding finger and set them, I also do not force the finger pins back down I simply release tension to drop the fingerpin, on some occasions the fingerpin has dropped in to the correct height / rotation and set itself.