Check your oil level. If your vacuum petcock or float bowls are over flowing gas into the engine, your oil is diluted with gas, the crankcase is too full, gasoline diluted oil is blowing through the breather tube into the air box, and from the air box into the carburetor. Needles sticking in the carburetors can happen at any time even to new motorcycles. If you have vacuum petcocks inspect the vacuum diaphragms for leaking. Clean the carburetors and replace the float needles if they show wear. Change the gas fouled oil and filter. Hope this helps.
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