What should the compression be on new 2010 kx 65. I got 130 psi which seems low to me and bike has only 5-10 hours on it. With the same guage I get 165 psi on new yz 125 which seems about right. Kx 65 runs great. What plug does everybody run, it came with ngk br10 but it really dark would a br9 be better. Thanks for help.