The AI_DesignCreation-file: A question to all AI-modders and ship designers

[Rexxx]

I’ve got a problem with the AI_DesignCreation-file. I designed three types of fighters (small, medium, large).
Small is equipped with 1 DUC, one shield, 1 sensor and 5 engines
Medium is equipped with 1 APB, 1 shield, 1 ECM, 1 sensor, 1 armor and 6 engines
Large is equipped with 1 APB, 2 shields, 1 ECM, 1 sensor and 8 engines.

I listed the designs "backwards", meaning the large comes first, then medium and at Last small. This "system" (which I found here in a post from Deathstalker) works fine for my "normal" attack ships, only the first (= the best, biggest, nastiest) design is built, the older, smaller ones become obsolete.
However, this doesn’t work for my fighters. The AI designed the large fighter and built even a few, then made the design obsolete and switched back to the small fighters. Now, I’m sitting here with hundreds of - in my opinion - absolutely obsolete small fighters and the AI doesn’t stop to build more. Giving different names to the designs helps a bit, at least I got a mixture of all three designs. But I want only the large fighter to be built…..
Any help would be appreciated.

Regards
R.