Get a new carb or rebuild that one.
Make sure you install a fuel pressure gauge to see where you're at. My engine builder advised .035 as a gap but I've read many are running .050. I run .035.
Get an air cleaner with the filter on the top as well as the sides for less restriction.
750dp may be a little big for your motor. What are the specs? There are many on-line calculators as well.
Will
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