Sorry to hear about the hydrolock......

I do all my own work, so I haven't had too much done outside. Did have a couple tires changed (wheels off bike) at Blackman's Cycle Center in Emmaus, PA. They treated me really good on this and two other occasions. Don't know about their skill level on the Valks. I did see a couple Wings there, but you might want to call and ask. They are pretty helpful over the phone.