Holley/Demon Carb stumble

I have played all around with nozzle sizes cam sizes. It just don't seem to be the problem.(really hasn't change a thing. 50cc squirter i have not tried yet....but if it's over rich at the hit, should be more so with a 50cc)
I really and truly think it has to do with the timing of the rear transfer slot and the ventures. but have now way of proving...let alone fix it.

Maybe i loosen the squirter arm on the primary side, (less shot), rev past that point and whack the throttle......see what happens. do the same with the secondary pump arm. With the squirter timing late on the secondary side.....It will bog less if it's were the problem is.?1...!1?

Or maybe lower the float level on the secondary........will cause the booster to come in later........right........or would it make it start sooner.

Sorry just grasping at straw.