Help with Nitrous works adj. kit
 

I recently changed my nitrous plate from a 125 non-adjustable plate nitrous works to the 50-175hp adjustable plate. My 125 plate was dead on and worked perfect the new plate sucks and even at the 175 shot I can"t run any faster than I did with the 125 shot. My A/F is good, retard set decent, and I have a bottle heater. I ran 11.6@116 with my 125 and I cant beat 11.7@117mph with 175!!! Any ideas? Im was thinking maybe too much fuel because I do run 50psi but I jetted the fuel side down to a 25 and nitrous is a 76 and my AF is perfect. My 60ft times are the same too.