Port an Polish.
You have the polish part some what right. Polishing is when you take the Ports in the cylinders, an make them super smooth. The smoother the ports become, the better the air an fuel will flow.
Porting.
This is where a person such as F.A.S.T racing / Kevin Hurr takes the cylinders an grinds on the ports, this is the key to make monster HP. You do not want to try this your self unless you absolutely know what your doing with two strokes. you do a little to much to something, it could run like a raped ape, but blow up often or not even run right at all.