94 GS500E throttle issue

[romeo20808]

I just picked up a GS500 over the weekend for $200 that just turned 10k miles. The throttle cable needs to be lubed as it is sticking a little. But the main issue seems to be that it is reving to 3k and staying there. Even if I turn the throttle back and fourth a little to try to get it to calm down to idle. The only way to snap it out of that is to turn on the choke and then turn it back off. Any ideas on what could be making it angry?

[Watcher]

I just picked up a GS500 over the weekend for $200 that just turned 10k miles. The throttle cable needs to be lubed as it is sticking a little. But the main issue seems to be that it is reving to 3k and staying there. Even if I turn the throttle back and fourth a little to try to get it to calm down to idle. The only way to snap it out of that is to turn on the choke and then turn it back off. Any ideas on what could be making it angry?

If it idles fine until it's revved then it likes to stay high it could be bad fuelling, as in it needs carb tuning because the mixture is off.

But if it just idling at 3k and likes to stay there it'll definitely be the idle screw.  Does it only do it when it's warmed up with the choke off?
You'll see the idle screw under the carbs, it's easily reachable with a gloved hand while sitting on the bike.  Should turn easily by hand.  Get the bike nice and warm and turn it down until the idle is around 1200rpm.

[romeo20808]

Yeah only seems to happen when it is revved up. Other than that it idles around 1200-1300. As soon as I turn on the choke it starts to come back down and returns to idle when I turn the choke back off.

[Watcher]

Inspect your carbs for any damage or leaks.  I'm not talking about fuel leaks, air or vacuum leaks are going to be the culprit if at all.  An easy way to do it is with the bike idling spray some carb cleaner lightly around the carbs.  If the idle changes, it sucked some up and you've got a leak.

If the carbs are tip top physically, it's probably all in the mixture.  It's been a while since I messed with my carbs and I wasn't exactly an expert then, but I want to say the mix is probably too lean.
Is it a stock air filter and exhaust?