Alright, for 3336M I will observe again.
For 5073H, its confirmed in BN. :)
3336M was on Sv 12 today again though. On A/P slot again, but
timings tally that of 3131L's from what I can remember.
Actually very simple. If you see it in the middle of the day at
12 noon just starting a trip from PSR or NBR, or somewhere along
the route, that's definitely not a S Shift slot for Sv 12, or BSEP
slot even for that matter. Sv 12's S-shift buses come out around
2pm+ nearing 3pm like that onwards usually. Ditto for Sv 17.
