I wouldn't buy any expensive carburetor, but go for the PZ or VM equivalent of your bike.
You could drill out the AF screw plug with a wood screw, or a drill.
But I wouldn't even begin to bother about it.
A PZ27 (with mounting flange) or a VM27 without mounting flange, cost about $20, and come with a pod airfilter and fuel filter.
All you'll need is a $10 jetkit, to jet up the main jet. The 95 main jet is too lean everywhere but on the peak of mount Everest.
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