I MUST be doing something wrong in my searches, because that didn't come up when I tried it. Sigh. Thanks for pointing me to it, though.
I know what you mean. It took me a while to figure out how to use the new search function.
This is how to do a search on Akiba:
1) Click on "Advanced Search" on top-right;
2) click on "Search Single Content Type" tab;
3) make sure Search Type is Post,
4) input search query in Keywords (for maximized results, type "MIAD-504
or MIAD504" without apostrophes),
5) and then check results to return as posts,
not threads.
Like the following image:
Happy searching!