I have a YS 63 I got back when they first got popular, BUT it's been sitting for some time and I keep seeing posts that people had there YS serviced and freshened up. My question is, who are they sending it to? I have a new plane I would like to use it on, and would like mine checked out and a new diaphragm put in and such. So who can I send it in to??

Thanks
Dauntae