These guys are correct. You may have a mechanical bottom before the upper fork tube hits the casting on the bottom. I have a Slacker tool to measure sag. Takes measuring mistakes out of the equation. Racetech.com can tell you through a prouduct search what rate springs you have and what you need. They are a bit aggressive in their spec of spring rate. Measure sag first, back compression out to half way. Use push method to first set rebound damping. Push hard on fork and let it rebound without resistance, and it should take 1 second to rebound but not go back down and occilate. Same with rear. Then rebound will be close, go ride the same piece of road over and over to set compression damping with zip tie. Good luck.