Modding questions

[Greensmok]

Greetings.
I start modding SE, trying add new units and faced some difficulties:

1. There is no access to change path to png files for drawning instruction (hardcoded, i guess). For now i just added extra drawning in existing png's;
2. No access to change "Model type info" screen (hardcoded);
3. "Flex model type" table in "SE_model" lib doesn't have extra column for "choice id 4, 5, 6" and i cannot add new choice variants (movement type, for example) for existing models;
4. I can add new model in "Flex model type" (and added id in all corresponding rows in se_model tables), but in game i cant find this model.

So now i can only replace existing models(units) and add new equipment's, there are too much variables that cannot be accessed.

Vic, can you help? Give some direction, manual is not egough.