Did you get this fixed? Sounds like it's wire in series. The boards need to be wired in parallel as it's a constant voltage driver, meaaning it only produces 54V.
I'd like the model of the light mentioned in the title Like this maybe: Pop22 growing Bubba Kush with the 650R
And send me a link everyone when your set to go.
Sounds wonderful! I look forward to seeing your grow!