I tried using the values you suggested:
and they still get the same result. I also soldered a 150 Ohm resister to each of the data lines and nothing has changed.
The serial monitor has :
ID: 1023 volts 3.30 resistance= 33758500.00
which is an odd value for resistance.
The blade ID is measured between GND and DATA, if you don't have a blade ID resistor, then a large value is expected.
The inability to control the strips is weird though.
Can you maybe share some pictures that shows how everything is connected?
The wires *look* good.
Except that the blue wire seems to be hooked up to pin 8 instead of pin 7 on the teensy. That's not a problem, but it's also not what your config file says.
(Just change the 7 to an 8 in the second WS2811 invocation and you should be fine.)
Next step: Measure. I don't suppose you have an oscilloscope? No, ok, well, just hook up a multimeter between GND and the data on the strip and turn it on.
Once it's on, you should measure a slightly fluctuating voltage somewhere around 1.7 volts or something. If you switch the multimeter to AC, you should also see a value in the same range I think.
If you don't see these values, try measuring on the teensy itself. If you see something different at the beginning of the wire from the end of the wire, your wiring is bad.
If the signal seems to make it to the strips, then maybe you have weird strips that work differently somehow? (Try a different strip)
If the signal doesn't seem to make it out of the teensy at all, try re-programming and/or a different teensy. (There has been at least one person who managed to fry a teensy in such a way that a pin stopped working, but everything else seemed normal, a sure sign of this is that the blade ID stays the same regardless of any resistors you hook up to it.)