Well today I got around to the polishing all 6 of the DV. And the nailing still persists the same as before. So I attempted to advance the timing, however it is mechanically maxed out and will not advance any further, I got about 2 full turns before I felt the tension was too high. Unless the nailing is due to the timing being TOO advanced, I'm stumped. The car drives great, just gets awful mileage. If I floor it from a full stop I get a nice black cloud but that's it.