Proto Matrix

What kind of shot is recommended for Proto Matrix 07?

I just got a Proto Matrix 07, but I do not like action trigger. I cut the spring and put the gun to the sensitivity of the a 1, but now stick to trigger the gun at times. Any reccommendations trigger type, and where I can find them? (Ordering online is fine)

http://www.pbreview.com/products/reviews/4906/

Proto Matrix SLG 30BPS!!!