Where can I get Finn bark blower air lock rebuilt?

Hey guys,

My older but trusty Finn aem-20 bark blower needs to have the air lock rebuilt. Does anyone here have a good place to send one to? I see about them being rebuilt all the time but have had no luck finding where. I am from Erie pa and was hoping to find somewhere close to me within driving distance to not have to deal with shipping. Any help is appreciated!!

Thanks guys.