Can verify that above 256 the channels get skewed by two. But I like batdive had all four channels just started two channels lower than we programmed.
So when I set it to 500 it started at 498 for white, 499 for red, 500 for Green, 501 for blue.
Can you check again that this is not the case for you and you really do not have red.
The 2 channel off issue I can take care of in firmware.
RJ