Nitrous problems HELP!!!!

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I talked to my tuner today and he said my chip should not effect my nitrous performance!!??I even took my chip out to try (still pops 3rd and foutrth mid high rpms) I have tried changing the plugs and going to a .35" gap (still pops in 3rd and 4th mid to high range rpms), I have played with my fuel pressure (tried 40psi vacuum line off, 45 psi same, 50 psi same)(still pops) How high and/or low fuel psi (vacuum line off) do I dare try?? The old plugs were grey/white.... Could something be plugging the nitrous solenoid and not letting it spray properly, hence my only 1/2 second gain and 5mph in the 1/4?? I used teflon paste, not tape and the solenoidswere brand new. I have heard some very negative things about this stupid Nitrous Works 125hp non-adj plate system I purchased (not to mention the purge solenoid leaked from new!! and their Tech department is totally ignoring me REGARDING ANY SORT OF WARRANTY) Thanks for nothing Barry Grant!!! I have played with my digital 6 plus I put in there and changed the timing retard all over the map. What should I do??? I hate my new nitrous and wish I never bought it because the gains are nothing close to what i expected (1sec and10mph in the 1/4) and my stang runs like crap on the jug.