Well it wasn't the LDD but the power supply limits..
Well both really...
LDD is really a current controlled buck voltage regulator..Which in this case will out max voltage but due to it being low will never output its rated current..
Reds are the same but your output is better (go guarantee it hits full of the LDD though) because red's V(f) is like 2.3-ish V.. 55V
This is for a constant voltage array but it will get you an idea of possible and impossible strings..
Anyways, if you have one that works and another that doesn't .. same exact config, you need to start looking at little things. Like if any of the solder points are "bridging" to the heat sink.
Using a VOM set to the lowest Ohms channel, you can put pos to neg across a single diode and it should dimly light.
Then pos to pad neg to heat sink.. reverse and repeat neg to pad pos to heat sink ..
Redo any that light if you touch pad and heat sink w/ the correct polarity of course.
just for reference:
Blues have the same issue probably.
Part of it could be lot variations of v(f)