Thing is, it's probably not worth it to chase it down. Epoxy would definitely let you shape the port, but at the expense of volume. Just have to think, is changing the shape gonna help enough to make up for reduced transfer volume?
Could..... Be the clutch cable. More then likely something like the claw on the shift shaft, shift shaft eccentric adjustment, possibly even clutch basket and hub wear. I'd plan on just over hauling everything under the clutch cover. Not a big deal. Do it all once and never worry about it again.
It will require different needle and seat. Also, it's pretty typical of them to have goofy angle fuel inlets that may need changing. There was a write up long ago with all the little details. May be worth digging for it.
Square space is a new web design that even offers the ability to run a store and perform transactions automatically. Very affordable and deecent quality.
It has tutorials through out.
Maybe try looking at other forum host websites. Vbullitin is a common one. Maybe tap talk....
Holy Shit! Lotta options have died off lately so this is a great time to start up. These look pretty slick, and are priced to kill! Nice work RB. Whattya price a solid color with the grill cut out.
It's burning better up in the RPM's could be a few different reasons but if it sounds like it's firing ok and doesn't have a bad looking plug I wouldn't worry.
Ever watch videos of drag bikes that just make a 20 foot cloud at the line but once it's wide open it's burning pretty clean.