are moded tech sported by current version?

If you mean techs what you can acquire by "random tech" area - yeah, mod support any kind on techs presented in the game including modded.

thx
also for some reason after i compleate a maze i got a
bad bays get coal
i didnt break the maze i only useed bots to clear the threes that were in the was was that intended

Seems something or somehow broken some walls.
In the process of maze building, script count how many walls is builded (in cases when not all walls may be builded) and use this number to catch "bad boys".
I'll try to add aditional check in this logic.

ok thx

Can i make the comment that Biters destroy the walls while trying to get into the centre, there are only so many i can kill. (Note: It seems even a single damaged only wall can give the coal result)