I've got this little project I've been working on for a few weeks now and need some help. I am making a spool hub for my flat track bike and can't find any information on the spoke holes (dia, c'bore size, shape, depth). Is there anyone here that could point me in the right direction? I have tried to contact Buchanan with no response. The photos below are progress photos thus far. There will be two larger pieces of mild steel that will actually hold the spokes and sandwich the aluminum center. Thank you.