Holley/Demon Carb stumble

yes i don't what to either.
I will do the test and we will go from there.............it may take several day before i can get the cap and do the testeing.
So yesterday i went out and warmed up my car set my fuel levels at exactly center of the sight glass, got it good and warm and tested throttle response in neutral and in gear, not stumble
took it out on the road and no stumble at all.........Yup middle of 3 gear she starts poping and banging.
I know that if i raise my secondary bowl up to 3/4 site glass it will bog and not pop again.

Frustrating, but something has been digging at me and i need you guys opinion.
May be grasping at straws...but.....

So you know that little spring behind them center hung floats.
My front float spring really don't do much except just before it hits the bottom of the bowl. On the secondary side it has tension on it all the time. Not so much as to hold the float off the floor or any thing like that but. but if you lay the fuel bowl on its back, so you can see straight down into the bowl. the spring will close the needle. on the front it won't.


Which set up is wrong..........OR does it even matter. like i said the weight of the float will overcome the spring and set in the bottom of the float bowl. there is just a lot more tension on the back bowl spring.

so nobody responded about the float spring......No big deal??