Secondary spring rate of HPD violet
 

Does anyone know the spring rate for the HPD Violet secondary clutch .spring. I was wondering the rate for the spring. I've been tinkering with the adjustments of my HPD roller clutch conversion on my 2000 scrambler 400. Trying to get the rpms up. My s55 weights and hpd red/yellow primary is not getting the revs much over 6000.