The response trigger can take some time to set up, try serching you will find lots of tips and mods (q-tip, straw and clicky pen) but its personal taste as to how helpfull they are, when i used my response i found a double trigger made it harder to find the sweet spot, (pulling harder with 2 fingers prehaps), and i found a strong spring on the trigger helped but thats the total oposite of my friend so try a few ideas and find what works for you, but remember its not going to be a case of squeeze hard and full auto, it can take a bit of practice!

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5 out of 4 people have problems with maths.