Well I ran my 250 and I noticed there was more deceleration pop than usual (probably due to the cooler air) as well as a longer time to return to idle. I went to adjust the fuel/air screw and it fell out. Sure enough, the spring, o-ring, and washer were still in the hole. This has happened before so I used a smidgen of Loctite on the pieces to make sure the fuel/air screw stayed in with all of the other pieces and it worked…until I tried to adjust it. What can I do to stop this? really frustrated that if I need to adjust the screw I have to take the carb out.