Brett if you have a dremel you can get polishing bits for them that are nice and soft to polish the ports.
It's not that hard, just use some common sense and if you are not sure about doing a particular mod then don't do it unless you are willing to buy a new sleeve and piston
if you stuff it up.
Most of the "professionals" only got to be that way because they started out as "amateur" engine modders
You going down to Taranaki next weekend?