trailblazer84
Husqvarna
A Class
A slightly lean mixture can give an intermittent bog when under load. My bike would occasionally bog when snapping the throttle at low revs (to pull the front up at low speed). I found it was related to engine temperature. After riding hard there was no bog but after a couple of minutes of low speed /light load riding it would bog when trying to lift the front because it had cooled slightly. One step richer needle diameter and all was sweet.
Don't confuse the normal 2t crackle at light loads/ small throttle opening with being rich, this is normal. Because a 2t carb doesn't squirt fuel in when the throttle is snapped open it must have a slightly rich state of tune at light load or it'll bog when the throttle is snapped.
If it doesn't foul plugs and responds well at low speed I'd say it's ok at the 0 to 1/4 throttle range.
From your description I'd suggest trying the needle clip in a richer position and test ride it. You could also try a main jet one size richer too. Only try one at a time or you'll end up lost. Don't be afraid to try a richer setting, it won't hurt the engine, be careful going leaner though.
that sounds pretty accurate actually with the bogging as its not all the time just sometimes when I hit the throttle fast, and yeah im looking at getting some jets and playing round with it soon as I can but I have a gearbox to repair in another bike so im out of money for the moment haha