Could you give us more information, symptoms etc. There is usually no need to buy a complete new carb. to cure fuel problems. It's usually things like blocked jets, blocked fuel line, blocked fuel filter, mixture too rich, too weak, fuel vapourisation, loose carb fixing bolts. And where are you ?. There may be a 126 club not far from you willing to take a look at the problem. Six months is far too long to be without a 126.
Banjo.