Did you really have to drill it out? Is it the carbon fiber mast? Good to know if that’s the case.
I’m just in the process of routing cables in a RL boards mast, material is about twice as thick as the Gong ( which can fit 7/8 AWG) and therefore i cannot fit more than 10AWG in it.
What’s your weight again? A size small Gong HA wing seems small to me…