hi, I remove the spring from under cross bar. let metering rods ride with the throttle.
I have done the same.
Can't comment on the secondary side jetting as I actually had to drill mine out to get the fuel mixture where I wanted it to be. After 25 years don't recall where its at. I did drill out the spray bars too on the secondary side and removed the "baffle" there after I had one fail and get ingested into the motor.
Car ran faster than ever. I'd laugh as I removed parts of the carburetor the car would just keep going faster and faster..
