Will not idle reliably

[bochnak]

Don't know about XS360s, but I think the plug is for newer bikes than mine and i have a '79 XS400. However, the pilot tube next to the main jet on mine has a brass screw in it with an angles opening into the main jet passage. Whenever i hear of idle mixture screws that don't make a difference, I think of tips broken off.

I'll have to take a closer look at the pilot tube tonight.

Tips are not broken, in fact, when fully in, it completely closes the port. When open it flows. I verified this by blowing air & spraying carb clean. It's pulling fuel elsewhere.