Pilot screw position

Hello! I took my 1996 model to the mechanic. He took apart the carbs, cleaned and balanced them. When i got the bike, he told me I was running rich. Upon starting the bike i noticed high rpm idle (1900-2000). Didnt have time so i left. Next day i tried to adjust it after a ride when the bike was warm. All good so far. Next morning the bike couldnt start cold after multiple attempts. So i upped the idle knob and started right away, but when it gets warm, again the idle speed 1900-2000. Also, the rpm doesnt come down to idle setting instantly, it stalls for a bit. So i want to try to adjust the mixture but after searching the forum i havent clearly figured out where the screws are. Could anyone upload a photo of the screw?? It would be greatly appreciated!