Parts preparation

Wing root auxiliary exhaust

Drill out existing shape, using drill bits first and files or a rotary tool with a ball tip

Cut-out shape viewed from the inside

Insert and glue part in place – note the orientation, there is only one possible position (using reasonable force of course :))

Final result – note that 1/ The parts should be painted after assembly 2/ I drilled the hole a bit too large

Tail auxiliary exhausts

Drill out kit slits using a ball-shaped rotary tool

Cut-out shape viewed from the inside

Insert resin part from the inside, the thick part of the base wedge should be towards the back

Final result