The photo of your slide looks a bit funny to me.  Might just be lighting.  There are two orifice holes in the bottom of the slide.  Your photo makes the orifice holes appear as if they are covered up with white plastic or paper.  Make sure those two holes are not covered up.  The little plate that captures your slide needle has two notches that correspond to the orifice holes.  Your plate orientation looks correct, but the holes appear as if they are covered up with something white.  Make sure you can see straight through those orifice holes.  If the holes are covered up, the slide will not lift.

You have figured out that the float hinge pin is a press fit on one side.  I can see the head of the pin is chewed up from attempts to remove.  Be very careful with that pin.  Always back up the aluminum post in the carb body when removing or installing the pin.  You need some sort of anvil behind the post when you drive the pin in or out.  I broke one of those posts on a very expensive Mikuni smooth bore.  I have no clue why Mikuni felt they needed a press fit on the hinge pin.

I am glad to hear that you are instituting new operating procedures.  That petcock should NEVER be left on when the engine is not running.  At least you got a good rinse on the lube system.

Keep us posted.  We want to hear how things shake out.

Good luck, Mike

One last thing.  In your photos, the notes state that the float was so out-of-whack that it couldn't shut the needle valve.  The picture also shows the float tang grossly out of adjustment.

How did you get that float level sight gage (picture in reply #15) to indicate correct float level?  Did the cats have anything to do with that.  Kidding aside, be careful with your float level.  Make sure the needle valve and seat shut off by testing with air before you install the float bowl.  Just turn the carb upside down and blow (with mouth) through the fuel line. The weight of the float should be all that's required to completely shut off air flow.  If it leaks, it could be the needle & seat or the o-ring around the seat.  No leaks allowed. 

Follow the manual for float adjustment.  Make sure it falls within specifications (26.95 - 28.95mm).

IT WORKED!!

Wow!  This engine sounds like a sewing machine now!  It purrrrrs like a kitten when it's idling and rides GREAT!

I replaced all the junk ebay carb parts and pieces with the high dollar OEM parts described a few posts up and it made a HUGE difference.

It runs like a real bike now.  I'm so happy about this.  I took it for a test ride today and it ran awesome.  I had forgotten how fun these little savages are to ride.  


Ok now for some technical details and observations. . .

The OEM needle jet was a tighter fit into the carb body than the previous one.  I definitely made sure the little notch was lined up with the indent.  It was also about 28 degrees in my garage too.

I double checked float level (properly).  I also did that blow-air-through-it test that DragBikeMike suggested earlier as a final sanity check.  From the test ride, I think the float level is fine (I didn't do an official fuel level check after install).

There was a little sputtering and stalling for about the first 30 seconds when the throttle was about 1/4 to 1/2 or so (accelerating through the gears basically).  But that went away and never came back.

And finally. . .

The idle/mix screw now changes the behavior of the idle  Yeah!  I dialed that in as well.

Thanks again for all the help on this carb.  Looks like it was definitely The Case of the eBay Carb Parts.

UPDATE:

I've been riding this bike all day.  It's been running perfect with zero issues--except one.  I pulled out of Walmart onto the main road and was sitting in the left turning lane.  The bike sputtered and died.  Then it fired right back up.  Then it sputters and dies again but this time it wont start.  Then, I get the green arrow but I'm sitting here like a schmuckatelly, dead in the lane.

Then I remember, "oh yeah, my new habit is turning the fuel off after each ride."  I reach down, turn the fuel petcock from the "off" to the "run" position, give the guy behind me a conciliatory wave, get the green arrow, fire the bike right up and take off like a bat outa hell (homage to the late great Meat Loaf).