Float height could be way off.
I've read a number of issues on this related to Carb adjustments but when I start my TW sometimes it runs and ticks, sometimes it runs, gathers revs then backs down to die.
I've adjusted the pilot jet in and out and 2 turns out plus played with the slow running screw up and down.
Any ideas or should I just try and find a new Carb?
All looks well inside, all clean and fine and no issues on accelerator cable and return, i.e. not sticking inside...
TW125 - 2000
Dnepr MT10-36 - 1982