I haven't had the opportunity to run saws much in the last couple years. I haven't even done much port work. Between burnout and health issues I've pretty much quit working on saws. However, a commercial customer of mine bought a saw that I built a couple years ago and said it wouldn't rev. This was basically a new saw that hadn't been used. So he sent the saw back to me to investigate. I started by checking the piston and it looked like new. I then set both carb needles to 1 1/4. The H needle was out significantly farther than it should have been. I then went to the test log to fine tune the saw and see how it ran. It ran perfectly. I haven't yet talked to the user since running it, but it appears it was simply a tuning issue. Anyway, running this saw just reminded me why I love this saw so much. This saw has a 16" B&C running .325 chisel chain. The wood is dead Ash, very hard wood. It just muscled through this log, even with the bar buried. Check it out.