I was intrigued because my friend was in the process of "packing" the cockpits. The "detail" was imaginary. There were wires, pipes, and boxes in every open space. To me, the effect was phony. I asking him about "packing." He said IPMS judges expected "busy" cockpits, and punished cockpits which did not conform to their ideas.
To me this was completely artificial.
A few years later I was observing the Best of Show model of a P-51 done by another IPMS winner I knew. All at once I realized something was completely wrong. The prize winner had the landing gear doors on rear to front, he had used the left side doors on the right and right on the left. It was a beautiful job on the model. I never would have penalized him (he removed the doors and put them on correctly in a matter of minutes). That the judge missed this error amused me. This was on a Mustang, not an obscure aircraft.