I'm not sure what you mean, Ron, about the gas cap. I did take the gas cap off once, to see if there was any fuel visible (there wasn't, though that only means I didn't have a near-full tank). Should I take the cap off before I check the positions on the petcock? Should I disconnect the hose and then move the petcock around w/ an open gas tank? I'm just not sure what you mean.
The tank should be clean. I cleaned it up completely a few months ago, and I've never run my tank dry. I usually only go about 1/4 full before I add more gas (if that, I top it off very chance I get from my pre-mixed gas container).
On the throttle, everything seems fine at the carburator end. It's the twist grip that seems off. I hadn't changed any tightness on the connector at the twist grip before the problem. Perhaps the grip itself is jammed in some way? What's better than WD40 to smooth it up? Or should I take it appart and look at it? What do you recommend?
I don't see why the cable should be damaged, but wear and tear can always do damage, sure. What do I look for to see if that's what it is?
I might have to just take the whole thing apart tomorrow. Probably after work. I hope I can get it fixed easily enough. Or else I'm out for a few days/weeks until I can get parts ... Doh!
Thanks for the help guys. Any more advice/info please pass it along!