Jeting the 670 Holley

I swapped the stock set out in the primary's for 68's. The car likes it a lot better! Sadly I have not been able to play with the secondarys so they are still factory jets. I was thinking of going to 70's if anything...

Did you change your secondary spring? If so what did you go to?
Ihave change to the lighter yellow spring have not had a chance to try this carb out bet soon.