dditch,

The regulator also works as an idle screw in your engine model, so you have to adjust it so acceleration is good, it can smoke but it has to be smooth, if you need to make changes to the pressure regulator for idle adjustment then remember to go to full power to reset the engine pressures before checking the results.

Even if your engine is old, it's a very good engine and it's easier to adjust than the later models. On this engine you check full power and transition, everything else should be ok then.

Oh, one more thing, remember not to fully tighten the rotating disc screw, the disc has to be able to turn very easily, not free spin, just easy to rotate with your fingertips.