I have an older Homelite weedeater that runs great, but I dropped it this afternoon after getting attacked by bees. It bent the back engine plate, which made the gas tank fall out. I bent the plate back into place, reinstalled the fuel tank, had to buy a new fuel line, and now the primer bulb won't fill and it won't suck up fuel. When I push the primer bulb, air comes out the port on the carb, but then it whistles on the return of the bulb where it should suck up fuel. The whistling sound is coming from the carb. I took it all apart and can't figure out where the air leak is; is there a check ball or something that could have dislodged when it was dropped??? Thanks for any help!