First thing first.. any questions on controller. I'm a simple phone call away. I can't help if you dont call.
Second.. Car is rich you pull fuel not meth. Settings under 5 will make the system lazy. The meth kit needs to deliver methanol predictably and reliably. Turning the Gain down clips power to the pump. If you need less meth, easy is move the "TURNON" point up so it activates when more air is moving.
Kit is set and forget, put the Gain on 6-7, LED goes red to green.. meth kit is out of the equation.
Big mistake is to use the knob like its a fuel pressure regulator that your tuning the kit round the car, you tune the car around the kit.
If the Gain is on 8, led goes red to green.. you have tuning to do.
Hope this helps,