That's as good a reason as any to split them in all honesty - especially when you know no better as you haven't tested back to back.

If you decide to redo your wiring and go all black like 90% of the field! I wouldn't run 10ga. It "sorta" fits and it can be done (I did it) but 12ga fits into the u tabs much, much better and you need to use a lot less heat to get a good solder joint.

I've gone back to 12ga now (last night in fact)