I tried to spot the 0858 new trip for Sv 39 from Tampines Int. I
figured out that along PSR Dr 1 it should be the 0923 or 0933 trip
given the time it needed to reach Dr 1's first bus stop..turns out
it was those 2 KUBs instead. Actually the 1st KUB i spotted for the
1st timing was 8540G not 8270K, sorry for that typo. But the one
after was 8273C, that one I'm sure. Not sure why it turns out the
perm KUBs instead...but did you spot it? So what was on Sv
39? 
I think I spotted the two in front of 3318R then..shucks. Didn't
take into account the jam at Eunos Link in the morning that might
add another 10+mins. Oops.
0851hr. And it reaches Pasir Ris Dr 12 at around 0920hr...
Lol.
First stop of Pasir Ris Dr 1 is 0908hr.
Didn't manage to spot it today.. due to the weather.