To take the circlips off, you could buy a tool specially for it (don't need to waste your money) just use a small screwdriver or a pointed probe (being careful not to scratch the anno finish. before you ask the next question of how to adjust the thing....use the grubscrews to the set the firing length first then set the trigger stop screw....and when you are happy with it drip thread lock onto the grub screws..if you try and put the thread lock on the screw and then insert them in the trigger it will set before you have the screws in the correct position. You will of course have to keep offering up the frame to the body to check that you have the right distances set.
Be careful with the circlips mate, i managed to lose both of mine when i was hurredly trying to fit the trigger. If you put a white sheet down before you shouldn't lose it. I use a mini pair of jewelery pliers now to take of the circlips, just edge them off until there is enough sticking out to grab them with the pliers. hope that helps
