It's not a big deal I can always drill out, but 1st I need to know if that hole has to be centered in beam one.
And what's annoying is that I barely just started the 1st step & already facing small but annoying issues, does that mean I am off to a bumpy ride ?!? It's all to be seen.
You need o check each part & not just count the parts needed & tick them off.

Naser