That's it. After the drone begin to morph into these bildings they have only 10% of their health and upon spawn remain heavly damaged. Is it possible to make them grow like normal zerg bildings?

Did you put the build time really small? That causes that effect, iirc.

It will be some combination of your build time and HP that you set the building to. As bio suggests, the first thing is to look at is increasing the build time.

Biophysicist
Nope. All default.
I think it may be hard coded becouse when you bild spore colony from creep colony u have S.C hp = C.C. hp
F.Ex. if creep colny has 270 hp u'll have sunk with 170>hp or spore with 270>hp
There is nothing about in Firegraft's exe edit afaik.