The intake is a total mismatch, the adaptor makes it worse. Just out of curiousity, do you have the factory intake? I would advise to install that with the adaptor and the new carb... As far as adjustments, if you sped the idle to 1000, you are no longer on the idle circuits, so it won't die of you close off the mixture screws. You need to get the stock intake back on, and then work on setting the carb. It should idle at 550-650rpm, and smooth. Also, there are different colored springs for the step up pistons.. Those are like the power valves in a Holley. You ned to order the strip kit for that carb, and follow the directions. I think you will need to change those springs once you have a usable intake on it.