My Yamaha just came in the mail yesterday evening, along with the trombone mouthpiece, guitar strap pegs, and piezoelectric pickups I had ordered for the project. All that’s left is sourcing the wood and measuring out a design. I’ll post progress here once I start actually routing wood pieces out.
Alan, I’ll see how much justice I can do my new Yamaha before I inquire further about the Kawai-25.