Hi guys new to the forum. I have x2 Eton Viper 90s. I cleaned both carbs and put new after market air filters on then adjusted air/fuel so it runs smooth. I also tweaked the acceleration pin and put on lowest settings. One quad runs like a dream and faster as before it was boggling etc the second quad now has an issue with the throttle sticking on full. I can either kill engine but when I start back up it's still on full throttle or when I rev it while on full it will cut back to normal idle revs. I'm thinking the needle I adjusted is sticking... so I put it back to previous setting and it still does it. However I did notice a slight kink in the pin as tho it has been rubbing maybe I need to get a new pin or any other suggestions would be great.

Thanks