What size jets (pills) did you get? Read the number on them. You should have gotten 5 pills. They should be .032, .034, .035, .036, .038.
Now, this is gonna sound really crappy, but don't take it to heart. I mean it in a good way. If you bought the kit brand new, sit down with the directions and read them front to back, because it is quite obvious you haven't researched this enough. You can end up with bad issues if you don't sit down and understand what you are doing / about to do. First, go to
Zex.com and read all the stuff you can on there. It would explain the difference in all the pills. It will also answer most of the FAQ's. If you still have issues, ask someone who is familiar
BEFORE you start messing with the install. I have a bit of experience with the ZEX kit, but othere people on here have more with other N20 applications.