Step 4.
Identify fin shaft. Insert the fin shaft into the fin socket to the rear of the plane.
Ensure that the front and rear of the plane will sit flush.
This will be a snug fit! Please note that the countersunk hole will be facing towards you.
Then, identify the fin and place into the fin shaft with the straight edge facing away from the plane.
Please note, the fin will now align with the back of the plane.
There will be a little wiggle room in the fin until secured in later steps.
Use 1x ‘L’ screw to join chassis pieces 1,2 and 3.
Tighten to secure both the fin and fin shaft.