u/Bloodsman

This is my first carb bike but I’ve only ridden it for about 3K km, guy before me did a full revision before selling it to me, even on warm days bike will slowly drop rpm until stall and most of the times choke won’t help but make it even worse, sometimes before warm happened a few times only but bike sounds and feels sloppy as if all cylinders ain’t working properly until warm
Asking as it’s my first carb bike, wondering if I should take to mechanic or learn to do carbs if is needed