On to the firewall. This kit happened to make it out of the factor with a "straight" firewall, instead of being offset for right thrust. No biggy - I knocked out the original firewall and Luiz supplied me with a new CF firewall. I took to installing the firewall and nose ring assemblies.
At this point, I believe the best stock nose-ring to use is sold by
www.buddengineering.com Jerry's nose-rings require no modification, and float nicely around the front of the YS. I'm also using Jerry's engine mount again. This is the 4th plane I'm used his mounts on and have had very good luck with the system (Thank You Jerry).
To install the motor, I propped the plane up on its tail and let the spinner/prop/nose-ring/motor/mount assembly rest on the nose of the plane, which sets the angles just right. I pushed up the new firewall and tack-CA'd everything into position, preyed, then took it all apart on the bench. Not having broke any of the tack joints, I then Hysol'ed everything into position. This was the easiest and fasted engine mount I've ever had, and that spinnner ligned up perfectly - very happy with the result.
Jim