when you take off the batery pack it says tp3. by the p1 led it says d21. according to ppl on youtube the way i make rapid fire is solder one wire to the middle pin under the a button. the other one either on the top/bottom pin under a. on the led, on the dot next to the led or to the middle hole to the left of the resistor. i tried all of these and the didnt work. oh and i am using a momentary push button. what am i doing wrong, why can the ppl on youtube get it to work or is it all just fake?