OK, folks, I have reinstalled my carb after a cleaning.  As I mentioned in another thread, I had some trouble turning the engine over trying to use jumper cables.  I just finally installed the battery and it started fine.  Now the engine sounds like it's racing really hard.  The throttle cable seems fine.  So I assume I have to adjust the idle speed screw and the newly exposed idle mixture screw.  Since it's racing, I assume it the idle speed screw.  I admit I'm a little gun shy since the engine is racing so hard I'm afraid of damage.  So, I assume turning the screw out slows it down and in speeds it up?  I'd like to slow it down before I start it again.

Thanks to all BTW.  I'm a rank beginner and this is all a bit intimidating when all I have is the Clymer's manual.

What does the washer look like?  Is it flat or a little brass tube?

When you turn the idle speed screw out, does the throttle follow?

check your cable

might not be correctly seated at the carb.

I thought I'd post to finish the story.

Good advice, Justin-O.  I did that and looked carefully at the throttle connection to the carb.  The little sleeve at the end of the throttle line wasn't seated correctly and it was pulling on the throttle.  I fixed that and the bike ran fine.  Still tuning a bit, but it seems to be running fine.  I had sanded down the white spacer by a half and it seems to run better.  

So, thanks for all the advice.  This was my first time disassembling the bike to any great extent and it's a bit unnerving when you're never quite sure you doing things right.