today like many other people,i spent most of the day trying to figure out why these switches are so hard to press down to get them to work,so to make a long story short,the tube that goes into the switch,its the part the spring goes in,i sanded the tube down about a 1/16,put it together, it worked ,no more hard pressure on the button to fire it,so what i did was make the button shorter ,so it would go down further,i think the tube part of the switch is to long,thats why you have to press so hard,i removed some plastic and for the first time it worked,this might not be or it might be the problem, it was with mine,i would like to hear from other people if they try this if it did work for them,take off a little then try it,you can always take off more you cant add to it. Be carefull!!,, k9 frog