Partial cross post, I mentioned valve cleaning in another thread, but it was geared more towards DSG service.
Random thought, while I'm in there, what do you guys think on a little sanding the ports to smooth them out a bit? Possibly (slim possibility) to reduce the surface area in the ports to delay further deposits for the future? Huge waste of time, or hit it for an hour or so and see how far I get? Not going for the whole port and polish aspect of things obviously....
