I rebuilt my carb, and shaved the shield off the top left of the carb. There's two adjustment screws that take a ton of playing and homing. Its very important that these carbs are free of debris and can easily move. Ensure that the vacuum discs are in good operating order. Most of my issues on rough idle have come from the EGR. But a rebuild kit from Autozone and a good cleaning helped me out hugely. I'll take some pics later to better illustate it. Where did you find one of those? We've been looking for a 2.6 after my cousins 2.6 Caravan was run into by a Dodge Ram. That was 2006. We're still looking.