Found out what was causing my lug lug rough idle. I ran a vacuum check on the throttle body and intake manifold. Looks like i have a burnt valve and now i need to know what to do next. Anyone that has done a valve job or head port/polish could you help me out. What should i expect to pay for parts and where should i get them? should i replave all the valves or should i replace the bad one? any info would be great.

josh