Originally Posted by BogiesAnnex1
I'd change the primary jets to 75's and observe what goes on. Reading plugs is difficult except in gross terms without a lot of experience an A/F gauge reduces this to simple.
You might be picking up the secondaries to easily, if this is not adjustable then pick up a spring kit and play with some stiffer springs to slow the opening time.
I have been dabbling with different springs and the problem there is usually the secondaries not opening soon enough. Still working on it. I'll try a richer jet size.