Hello and sorry to bother.
I've been reading the DeathWatch manual for a while now and I cannot find how you can improve your initial wounds.
According to the manual you can improve them in the Specialization section of the manual, but there is no place where you can, for example, spend 200xp for a +5 wounds.
Can you shread some light on this matter and if there is not official way, is there an unofficial one, tested maybe?