ovber heating or connections?
all the wires have numbers on them, they aren't all blank black wires.
I didn't realise it initially, but the bob has 3 5v outs on the side, i didn't see them, so there will be single feeds and one loop to each drive. no choc block.
I think i shall fling in a little brushless 5v fan extra, just found one - do i run that constamnt off the bob.