Does your gpu use more than just one power cable? Mine does and I wanted to have both of my sleeved cables to be on the same. (Based on the combs that came with my kit)
I made some combs to bind together 8+8 pin, 8+6 pin, and 6+6 pin individually sleeved cables.
Does it not fit your cables? Message me! I probably wont do anything about it but you should be savvy enough to make it fit.
Don't be a dingus and print it flat. (Also 100% infil might not be a bad idea )
It fit my cables but maybe consider scaling up a little bit because it was pretty tight.