Need source for new floats and floats needles and parts for Bandit 91 400

[novicoupe]

Ok I bought a 91 Bandit 400 for my son and bike shop cant get it running right. He says float needles and parts need replaced as it leaks gas constantly even with new  O rings and such. He says floats are all warped and wont seat right. But he could only find floats and needles from Suzuki and very salty.