Some deployment info posted earlier. 
Service 900:
TIB 904A
TIB 999B
TIB 1181L
TIB 1183G
Service 901:
TIB 446E
TIB 595H
TIB 1049L
Service 903:
TIB 1145S
TIB 1193C
TIB 1194A
TIB 1195Y
TIB 1196U
TIB 1197S
Service 911:
TIB 480E
TIB 500G
TIB 545C
TIB 546A
TIB 734Z
TIB 740E
TIB 743Y
Service 912:
TIB 985R
TIB 1079A
TIB 1129P
TIB 1130J
TIB 1141C
TIB 1143Y
TIB 1146P
TIB 1180P
TIB 1190K
TIB 1191H
TIB 1192E
Service 913:
TIB 980D
TIB 987K
TIB 1024H
TIB 1067J
TIB 1069D
TIB 1106E
TIB 1186Z
TIB 1187X
TIB 1189R
Buses on spare include 1051D, 1052B, 1056R, 1073R, 1076H, 1139K
(sometimes cameo on 911) and 1140E (most of the time on 903).
Some other Volgren Bendies are on Sv 960 (1179U, 1185B) and Sv 962
(1184D, 1188T). 1178Y and 1182J are running around I think.