Motorcycle is sputtering, what s going on?

I ve had in the shop twice with a carb clean, since cleaning them 3 times by myself didn t work. Each time I pick it up from the shop, it runs great for a week or 2. No vacuum leaks that I can find, runs same without air filter. I ordered a fuel filter which I don t have now. Anything else?
2000 Honda Nighthawk 750

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