Now back with OEM jets, 35/118, air-fuel screw at 1 1/2, the bike starts and idles, but dies with any throttle at all.
My guess is I need a new slide, as I drilled out the hole per 6 Sigma instructions. Grrr!

 

You DO NOT need a new slide.

You DO need to fix whatever fault you created during this latest carb session ( to put back stock fueling parts) ..

See my link below to read about all the problems you could have created. .If you feel as though you are smart enough to have not made blatantly stupid mistakes ( like not reinstalling the needle jet) - perhaps you made one or more of the "easy to overlook" mistakes ( like putting the needle jet back in upside down..)

 

Per 6 Sigma, I drilled the slide out with a larger hole. You say I don't need to replace? I need to plug it or replace it to get it back to OEM. No?

 

The drilled slide is not causing your current problem.
While you have your carb apart, fixing the current problem, you can JB Weld the lift port closed and then redrill it to stock specs.
Whether you redo the lift port or not, once you've solved the problem, the stock jetting should work much better at high altitude than the 6 Sigma jetting did.

 

@Klxster It must be the slide, as I've gone back to OEM jets. The only other item I changed was the drilled slide.

I've read your very comprehensive link, thank you. I'm left feeling a bit more confused, though. As I now understand it, I could have left the 6 Sigma jets, plugged the slide hole, and it would have then self-adjusted at altitude. But at the same time, I could also go back to OEM jets and leave the slide drilled. Thus, my confusion.

Either way, I cannot give it any throttle as it is now.
The only items in play:

1. pilot jet
2. main jet
3. slide

All other items are as they always have been.

 

Yep, you are confused.
So let's get you up to speed.
This is what I understand: Right now your engine will idle just fine at the correct 1250 RPM and with 1.5 turns out on the stock #35 pilot jet, but dies with any throttle input.

This means your pilot system is functioning properly.
Your primary fuel system is completely nonfunctional.

The reason your primary fuel system is nonfunctional is because you screwed something up when you put the stock pilot and main jet back in.
You will be taking your carb apart, over and over, until you fix the issue you created.
The link will provide you with many possible problems and solutions, that can be caused by a carb session gone wrong.

 

Thank you again KLXster.

So the main jet, which is now OEM is correct, nothing to screw up as it only needed to be seated.

All that is left is the drilled slide; there is nothing else that has been touched. Expecting the main jet is clean and screwed in correctly, this only leaves the slide.

 

Ok, I understand what you are thinking. You are thinking that you didn't "mess with" anything but the pilot jet and the main jet, so how could anything else have been affected.
What you need to understand is that regardless of the above, something has caused your primary fueling system to become completely nonfunctional. And this began after your last carb session.
So let us review a few items that could be wrong with your primary fueling system.
1. Stuck slide - test by lifting the slide with your finger. It must offer a linear resistance and return immediately to the closed position. A stuck slide will not allow any throttle - which is what you are reporting.
2. Tilted carb - the carb must be indexed properly in the intake manifold boot.
3. Stuck or otherwise nonfunctional float/needle valve system - This error is easy to accidentally do whenever the bowl is removed and reinstalled.
4. Unplugged, misplugged, and/or leaking vacuum lines.
5. Clogged main jet and/or clogged emulsion tube.

 

Okay, I'll remove the carb, retrace my steps, and check for these specifics upon reinstalling. I'll report back! Thank you.

 

After much research, I've come to terms that my carbed bike will never run as good as it did OEM at altitudes that vary as much as they do here in SoCal. It simply cannot be jetted to run good as sea level, and all the way up to 8000 feet. I checked the altitude at most of my trails and it seems that 6000 feet seems to be average. Therefore, I thought I'd run 38/118 and keep the drilled slide, keep the smog removed, and keep the GPR exhaust, mostly because it weighs so much less. To help adjust at altitude, I'll add an air/fuel adjuster screw. Thoughts?