Damn, those connections are small, but using your method I got the following numbers that seem to be in spec:
.591v at idle
3.76v full throttle (seems low but don't know and don't know what it means)
Operating: 4.97v
My bike never got more than 65mpg indicated, top speed,82mph, now with 18 tooth front sprocket and freer exhaust, 81 mph, don't know about mileage yet, but after breakin which I did by the book, I got 65mpg but not long thereafter it dropped to a consistent 55mpg indicated but the exhaust was immaculate when I took it off to replace broken head pipe a la ChrisG5. I'd like to do some touring on it and I just want to make sure everything is 5x5. I'd recommend the 18 tooth to any G-5 owner. Also, sometimes the bike feels like it has more power than usual. I just can't get a handle on what's going on.