i tried to create this layout
lev 0
Lit4,Lit4,c,Lit6,Lit6
Lit4,lit4,c, V, V
Lit6,Lit6,c, V, V
Lt1,c,c,stt6,stt6
E,E,E,stt6,stt6
lev 1
Hat4,Hat4,Hat6,Hat6
Hat4,Hat4,Hat6,Hat6
Hat4,Hat4,Hat6,Hat6
crt6,crt6,c,stt6,stt6
crt6,crt6,c,stt6,stt6
lev2
Hat4,Hat4,Hat6,Hat6
Hat4,Hat4,Hat6,Hat6
Hat4,Hat4,Hat6,Hat6
crt6,crt6,c,smt6,smt6
crt6,crt6,c,smt6,smt6
lev 3
Hat4,Hat4,Hat6,Hat6
Hat4,Hat4,Hat6,Hat6
Hat4,Hat4,Hat6,Hat6
get6,get6,c,smt6,smt6
get6,get6,c,smt6,smt6
lev 4
Hat4,Hat4,Hat6,Hat6
Hat4,Hat4,Hat6,Hat6
Hat4,Hat4,Hat6,Hat6
get6,get6,c,spt6,spt6
get6,get6,c,spt6,smt6
lev 5
Hat4,Hat4,Hat6,Hat6
Hat4,Hat4,Hat6,Hat6
Hat4,Hat4,Hat6,Hat6
Hat2,hat2,c,spt6,spt6
hat2,hat2,c,spt6,spt6
Lev6
Hat4,Hat4,Hat6,Hat6
Hat4,Hat4,Hat6,Hat6
Hat4,Hat4,Hat6,Hat6
Hat2,hat2,c,trt6,trt6
hat2,hat2,c,trt6,trt6

where ha = hall, tr = trans,c = coridor, e= entrance,V = vault,st= stone cutter,sp=spelmaker,cr=crystal shaper,ge=gem cutter. halls are helian for level 1-3 and the linus level 4-6
tn = tech level.

ok I can't get to be placed non of the t4 halls nor the t1 library nor the T6 crystal shaper in place although all should have been possible.

So how do i do this, or do I have to conclude that lair design is broken.
this was done on the southern lair in morning light 5x5x6 on order.
marble on order

PS for devs no contrucktion is going on there nor anything placed.