Have you tried to adjust the R/T or the qev. I have heard that they are adjusted differently if you use HPA or CO. You may just need some adjustment. Have you heard of the clickpen spring mod. Search the forums and you will see it. I think mistermister has the link in his sig. That helped my R/T find sweet spot better. Makes the trigger little lighter. It is a cheap mod that makes a big difference. There is also one w/ a Q tip.

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"A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort." - Herm Albright