This is an interesting thread about updating your carbs. Please keep us posted as to what jetting you wind up with. I am sure many are watching and can benefit from your work.
I am impressed with the expertise shown here, machining skills are impressive as well as just good engineering, it is not wrong to build on other's engineering success. Really improves the breed.
84 & 86 ran great in Colorado this month of Sept 2014. Tearing 84 down to hone and inspect cylinder for burning oil. Hopefully new rings will fix.