During reconditioning we replace much of the internal felts as they can become worn. The felt we are talking about is not Yamaha branded because there is no such thing as Yamaha branded key bushing felt and there is no such thing as Yamaha branded practise pedal felt. It’s just felt. It is industry standard felt obtained from any piano part supplier.
The same can be said for the loop cords and bridle tapes that we replace. They aren’t Yamaha branded because there is no such thing as Yamaha branded loop cords and bridle tapes.
So please be assured that we are not putting any old junk material inside the pianos during reconditioning. We are using the best materials that are most suitable for the task.