[pusherfans]

How do I contact Pro Systems?

Also, I plan to check the vacuum of the inatake at idle and change my 8.5 power valve accordingly. However, when I do so, it may fix my 1800 rpm issue, but will probably lean out 3/4 throttle again. So, any thoughts on how to richen up 3/4 throtte without flooding it else where, where the mixture was already good?

One more thing. . . . at 3/4 throttle, the front and the back butterflies are both half open right? so jetting changes should be done to both sides to richen it up or just front or just back?