Hi all, I have a small vibration that I can only feel when idling in park. It feels like it's kind of an irregular little shake every second or two. I can feel it through the chassis, but my friends tell me It's normal/I'm insane hah. As soon as I put it in drive it goes away, seems to only exist around 900 rpm. I recently got a new block due to low compression in the old one, have new plugs/wires/cap/rotor/fuel pump/belts within the last 500 miles. I tried running a bottle of techron in it to see if that helps, have yet to see results. I guess what I'm asking is this something that the rest of you guys have (nature of the beast) or does anyone know where to start since I've already replaced so much stuff? Thanks!