I seem to have no control over any TN's in my 4 1 x x shelf, as described below. I read some other topics referencing XPEC DSBL, but am still unsure what I need to do to correct this.
REQ PRT
TYPE XPE
XPEC
S0 S1 S2 S3 LOC DIS RGTP
01 004 004 004 004 NO 08
02 004 004 004 004 YES 08
REQ ****
OVL000
>LD 32
NPR000
.DISU 4 1 3 6
XPEC DSBL
.DISU 4 0 1 7
.