Sounds like you do what I do.
I'll balance the sled without the cable entirely. Get it into dynamic balance, attach the cable to the gimbal and the stage, pull camera aft just ever so slightly, and make sure my side/side's good as well.
At this point, I don't even bother with adjusting anything else or even do a spin test. I feel like that cable could get tangled and snag on something if I do.