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