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Well, I figured out why it wouldn't start. Spark plug had a bunch of build up on it, to the point the white insulator was cracked.  
Gonna be a few days before I can replace it.
It was an NGK C7HSA, by the way.

Was the build up on the plug due to the too rich mixture? 

Also, I double checked the valve lash - still at .003 intake and .004 exhaust.

Damn, back to work tomorrow and Sunday, so no work on the scoot till Monday. 
Good thing I got vacation time for the next few weeks.

Ok, so I tore the carburetor apart again, adjusted the float a bit, and switched the pilot jet out to a 32.
Now I have a 32 pilot and main jets.
Started right up, idle got adjusted to about 1 1/4 turn out to a real sweet spot.

Let her warm up, no issues. Went for a ride, about 1 mile and a half down the road it sputtered at a stop light and died.
Took a while to start up, but got her going again.
Went another 1/2 mile, and it lost all power while under throttle, which hasn't happened before.
Tried starting her again, but nothing. The engine turns over, but nothing there.

I'm currently charging the battery, and won't be able to dig in to her until later tonight, as I have a paper to write.

Hey all, just bought this baby brand new a few days ago, had 0.4 miles on it.
Did the PDI, and figured since it was torn down I'd throw in a 47mm BBK, orange coil, UNI filter, plus eliminate the vacuum hose and PAIR system. I have a blue racing CDI, but it makes for a real hard start, so I shelved that for now. Also, both enigne and gear oil were changed right away.
Also installed a Keihin PD19J carb, with a 35 pilot and main jet.
Valve lash is set at .003 intake, .004 exhaust.
When adjusting the A/F screw on the carb, I had to screw it all the way in to get it to idle at a decent rate (no tach yet, so not sure of the actual RPM number).

It runs good, I've hit over 50mph (per GPS), but once it's ran for a while when i lay of the throttle at a stop sign it starts to idle real low, almost sputtering. Adjusting the idle screw just seems to mess it up, as it gets either way too high, with the back tire spinning like crazy, or to where it barely runs.
Today I rode it for about 12 miles, and when coming home, it just lost all power and died out on me in the middle of the road. Luckily, I was only a few hundred feet from my house, so was able to push it back and coast down the hill.
It would start back up, but die instantly. It would die even quicker if the throttle was applied.

I've tried adjusting the carb needle, from all the way raised to all the way down and everything in between with no noticeable difference.  I've also tried installing the original carb it came with, it wouldn't even start then.
I've tried removing the uni filter and reinstalling the original air box - no difference.
It starts and idles again, but the idle only seems decent while cold, as soon as it warms up - it starts dropping to almost nothing.
I've rechecked the valve lash, still the same as I set it.
Anyone have any ideas? I'm at a loss.

Help me out here, guys - I love this little scoot and want to make it zoom zoom again.