Honda mower runs rough

I have a Honda mower that is running rough. I thoroughly cleaned the carb and reinstalled it. The user hit something hard enough to bend one of two blades. After you start the mower I let it warm up take it off choke and it still runs rough. I was thinking that it might be the flywheel key being a bit off. Would the timing cause the engine to run rough? Could it be the gaskets on the carb?
Thanks

It could be an offset flywheel key. gaskets could be the culprit also. by run rough do you mean engine surges or blows black smoke or just has a lack of power.

ILENGINE said:

It could be an offset flywheel key. gaskets could be the culprit also. by run rough do you mean engine surges or blows black smoke or just has a lack of power.

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Ok, it was not the gaskets, although I did install new ones. On this carburetor there is a plastic washer/gasket with a vent hole. That vent hole was clogged! I cleaned it, installed the card and what do you know? It ran like a champ!
Thanks for the help.