I was working on the car today and thought I'd check the base idle setting. It was several hundred RPM low, so I went to adjust it. The moment I began to turn the screw to adjust the idle, the top of the screw began to disentegrate under very light force. I'll need to replace this and am hoping to avoid trying to get one from a dealership. Where can anyone recommend buying parts. I looked in the vendor directory, but the only vendor listed there did not appear to have the part. I can give them a call, but thought I'd look for other resources in the mean time.