Good idea on the elevator trick. I used a Ball Link on the rudder to get around that problem.
The measurement to prop washer is correct, the drawing is wrong. Use the "other" firewall.
As mentioned in another forum, the axle threads are short on mine. Used Goop on the nuts
as the Nyloc is not engaged and there is not enough threads to use a lock washer.
I also went with a 55. I figured the thrust line from their marks on the firewall, rotated the mount
so I could use the stock muffler instead of the Pitts. The muffler is on the center bottom, the head
is somewhat exposed instead of completely inside the cowl, still have the hole for the main
needle but a smaller hole for low speed.
Used a 12x6 3-blade thinking it would slow it down. I was wrong. Just wait till you open it up.
It's like a prop jet.
I was way nose heavy with the engine and stock muffler. Cut the covering in front of the Tail
Wheel and put weights inside the Fuse.
Put more up elevator throw that the low rate suggestion. In Grass, with the short Fuse, the
tail wanted to come up during my taxi tests.