Hello i recently got a kx125 1991. This is my first bike i have a bit of mechanical know how but no expert especially on a 2 stroke, just wondering if anyone can help me i dont know what else i can try.

The bike seems to start fine after changing the glow plug. Then it randomly bogs down and wont turn over. I get a couple of spins up and down the lane it pulls really well bit lumpy but it goes through the gears fine and revs high and low then it boggs out. Happens at low revs,high revs while riding, While idling. Hot and cold dosnt seem to make a difference.
Loads of smoke as well. Earlier i put a sparkplug in.Changed the air fuel screw to stock. Kicked it over few times it fired and idled well for 3-4 minutes. Loads of smoke.
Then took it for a spin evreything was fine. Then it bogged out again.
(Im getting a bit few up of pushing it back up the lane &#128514

I Have had the carb apart cleaned evreything(was prety clean to begin with) Blown through everything with air.
The top end has been off and piston looks good.
(Have receipts that it was changed a month ago)
Cleaned all around the power valve linkage. All moves fine.
Messed with the air fuel mixture screw.
Air filters good.
Fuel tank vacuum not blocked.

Iv put in a 32/1 mix the previous owner had it on something like 50/1


Anyone got any ideas please!!