Ok I just came from "underneath the car" and I adjusted the modulator. When I shift at 1500 RPM it doesn't "clunk" anymore, and when I give it more throttle it doesn't do a burnout when it shifts into 2nd gear. Turns out the modulator is green instead of black, even though I thought the california ones are black.
When you have a modulator with the T handle on top and keep turning it left, is there a stop? Mine just becomes really loose after the adjustment stage. Is that supposed to happen? Or is there something inside it not "following" the adjustment?