Advance spring

SO my new factory distributor had stock springs, I got the Mr Gasket spring kit.pulled 1 heavey spring and put 1 lighter spring in. Awesome throttle response,but it pings at part throttle but not at wot.360 30 over 9 2 1 compression.18 at idle and 34 , full advanced i have put my old dizzy back in with the factory heavey spring no ping but not so good throttle response. Is there a better spring kit that is out there.thanks again.