16mm MT-G/MT-G2 PCB?

I ordered a couple of the copper Convoy C8 pills from the other thread. Plan is to build a C8 with a MT-G2, a modified Nanjg driver with higher voltage capability and more 7135s added, and a couple of IMR 18350s for batteries.

I haven’t found any 16mm MT-G2 PCBs yet - doesn’t seem like there’s any reason they shouldn’t exist, but I can’t hit anything on google. So I’m thinking of buying a 20mm Noctigon from intl-outdoor and filing it down to 16mm, hoping that I can do it without shorting traces to the core.

Anyone have any better suggestions, or know of a 16mm MT-G/G2 MCPCB?

Thanks!