What is this hole for?

[scott.mohekey]

What is this hole for? Should there be something covering or going into it?

http://www.ozvr4.com/forums/attachment.php?attachmentid=2495&stc=1&d=1235878485

I can't seem to get the image to work here on CVR4, so I'm linking to a copy on ozvr4.

[foxdie]

Images are broken :/

[scott.mohekey]

I've just had a look through ASA and I think I'm missing one of these:

MF665535: CAP M/T CASE SEAL

[Kieran]

Yeah, it'll be a vent grommet/plug that you're missing.