rev limiter dalton clutch

hello, I hope that hunterworks can see thus thread but anyone is more than welcome to help me.

I have a 2009 rzr 800s with the engine from a 2013 with computer the only thing left from a 2009 is fuel pump and frame.

I bought a dalton clutch kit and decided today to install it.

I followed rhe instruction and for 28" to 30" between 0-4000 elevation it said to use the 3.1g rivet with 2 set screws. by the way I have 28" zillas. so I install what was said in the instruction and installed the black spring.

I went for a ride and floored it and hit rev limiter.
I went back and tried with 3 screws then with 3-1/2 since I hit rev limiter again.

now I was still hitting rev limiter so per the instruction I decided to drill out the 3.1g (this is where I think I fudged up.) so I installed the 3.6 rivet and started with 1 set screw. hit rev limiter again. now I started thinking that something was wrong. started paying more attention to the rpm and noticed that the rev mLimiter I thought I was hitting is ar 4500-5000 rpm is that possible??? also I tried with 3 set screws and 3-1/2 and decided to ask questions on here.

it hits the limiter and then continues on to 61-6300 rpm that I noticed.

is it possible that the rev limiter that I think Im hitting is more of a fuel pump or regulator issue?

I didnt notice if I was hitting the limiter before the clutch kit. should I put it back to stock?

I really need help.

also should I try to source new 3.1g rivet as I destroyed mine?

mine rzr is stock except for I am missing the spark arrestor.