Artic Cat X fire 700. stock set up,RPM's would shift to 7800 then climb to 8000. rpm. The goal ,Max RPM @ motor 7800. I then went and bought a clutch kit from D&D, consisting of 73gr.big dog weights and their orange primary spring. When I installed them I would get initial shift to 7900 at full and then it would drop down to 7600 rpm, I figured when I saw the weights , because they are lighter the RPMs would increase, but the oppisite. stock spring is cat yellow/white with 75gr weights.Can anyone tell me why, I tested on lake with 1in snow, did many runs. Big dog weights maybe because of different profile?