Diamond Dust CW Kit Assembly Manual page 26

Section 1: Framing of the Airframe – Cont.
Step 28
Next you will cut pieces of ¼" x ¼" triangle
stock to fit on the inside area of the motor
mount plate.
Miter your corners at 45 deg. angles for best
fit. You may have to notch the triangle stock
to clear the Kevlar thread that is wrapped
around the motor mount plate and the L.E.
Repeat this procedure for both the top and
bottom of the motor mount plate.
26
With a hobby knife, trim the triangle stock to
match the #1 rib profile.
When you are done trimming the triangle
stock for both the top and bottom of the
motor mount, lightly sand the triangle stock
to match the ribs and firewall.