Yeah I was talking about the Eastwood, those trees on the Yamahas are stock.Both Yamahas came that way, but talking about the Eastwood? Yeah. I got one from the first batch (no string trees and a badly cut nut) and the string retainer helps with buzz a lot. It does prevent me from using lower gauges on the high B and E though.
Eastwood will send you the string trees if you want them, in case you ever want to use heavier high strings or something. They should've been stock though from the get go, I don't know why they took them off after having them on the prototype.