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.
Yup Exactly as would be expected.

Is there a better spring kit that is out there.thanks again.
Nope

Vacuume advance is not adjustable gas 87 when I can afford it 91
H'm. New factory? What exactly did you buy? NOS - what's the part number? Or something from a parts store? or ?