Quote Originally Posted by evert View Post
Professional honing tools are obviously the best solution, but they are not available to most of us. Many have access to a lathe, so fitting a brass lapping plug is a more likely option.

Its not only about velocity fluctuations, its about guns that tear up seals, dont make power, leak lubricants past the piston seal and burn up piston seals fast.
Most of our local auto machine shops have the equipment in our area. It was really easy for me because the machinist was a good friend.