Just wondering how people have their Holley's set up.

I have a 600 vac secondary. I removed the choke added a 1" spacer have installed 57 jets in the primaries and 65 jets in the secondaries, also have a screw to make the secondaries open slightly after the primaries start to open. I had this set up on a stock 12a but leaner. It had hesitation with the stock engine but with my street port the hesitation is gone. The only thing that bothers me is it seems like the top of the power band is flat, not sure why? Tried to richen secondaries, but doesnt seem much different? Their is not much info out their on tunning Holley's on rotaries, I would like to see that change? Let us know how yours is set up, what it is on and how it runs. Mine runs good I would just like a better top end.