Should this configuration work? I'm thinking I'm exceeding avail timeslots. MPBE 3.5.1-2FE3 software

The new T1/Combo card I'm trying to add in slot 1-1 does not want to run. CSU show EQ LOS and cards in shelves 2 & 3 go haywire. I verified the card is good by putting it into another system. Checked programming ok. Adtran tested ok. Its not wiring, etc.

Cabinet 0
0 DT24
1 DT24
2 DT24
3 PRIB
4 PRIB
5 LCI8

Cabinet 1
0 PRIB
1 PRIB (the new T1/PRI card thats not working)
2 DT24
3 DT24
3 DT24

Cabinet 2
0 DT24
1 DT24
2 DT24
3 SL12

Cabinet 3
0 DT24
1 DT24

I also tried the card in slot 1-6.