ORIGINAL: summerwind

was funnin' with ya.......that's why i added the smiley.
this was actually a good experience for you, as you found out how little the work actually did.
i've beat many a Free Flight competitor because they did mods on their engines that caused reliability issues.

ThumbSkull gave you solid advice as to why you don't want to mess with the transfer ports....atomization of the fuel is affected and causes more harm than good.

timing, carb bore, and head clearance is the easiet way to gain.
you can pack the crank for a smoother transfer, but stay away from the radical grinding as you lose reliability there too.

buy a Jett, and see how it's built.