Hard starts after running

When we got that complaint, it was generally fuel percolation, or veturi syphoning.
After shut-down hot, when it's likely to happen, take the top off the air-cleaner and look, not glance, down the carb throats front and back, - often you can see fuel dripping down into the manifold, it'll continue as long as there is pressure in the line to fill the draining float-bowl .
Percolation is heat, need to add suitable insulated spacer. (Usually associated with summer heat).
Syphoning is usually a plugged bleed, blow out those little jet thingies or poke it with "tag-wire".
Good luck .

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