for today. 7460, 7469, 7473 and 9060 need Preventive
Maintenance. there is only 1 S Shift on 143 for doubledeck and 9060
takes the slot. 7473 has ran over to 51 S Shift and the other
2 no choice run have to do 174. sad to burst your bubble.
but the 143 B9TLs which are the best buses in SLBP will
stay in 143 and not go over to 174 for now but the
174 B9TLs will come from 51. so they arent perm.
currrently 174 LO3x running about due to the large influx of
K230UB. for the SLBP starter its becoming a headache.
I think that services 51, 52, 143, 174 should
get more WAB buses (regradless SD or DD). Those LO3x will be
good to go over to the JIS services instead. I noticed that JIS
services still have majority NAC buses even though some bus
services are already PAC fleets. If services 246 and 251 also
become PAC fleets that will be better.
I also got the feeling that HGDEP will also start depolying
K230UBs on service 51 too since SLBP has started deploying them.
Likewise for service 52 under AMDEP. 
Btw is there any possibility that SBST buys more B9TL in the
future?