First time Holley tuning help

So tonight I left the blue cam in it. Blocked the power valve upped the jets in the primaries to 75s (might be overkill) 74s in the secondaries and had the black spring in it. No stumble but definite delay in the secondaries coming in. Ran pretty good other than that. Switched to the white spring to see what it would do and it stumbles. Obviously I still need fine tuning and gonna go to the long yellow spring or purple first thing but my front tire tube valve stem went to leaking so testing ended. Haven't pulled a plug yet to see how far jetting is off. But I feel like it's definitely on the right track. Only have till Saturday to get her tuned in