I just replaced the 92mm stock top exhaust fan on my 8930 SE with a Noctua 120mm. In the process I noticed my CPU fan is missing a screw; only has two, should have three. Probably not a big deal, I don't think the CPU blower is going anywhere, but I'd like to replace the missing screw if I can. The 8930 service manual screw list says it is a #6-32x1/4", but the photo doesn't look like the ones in my pc. I have the upgraded heat sink and blower. Does anyone know what kind of screw this is, and where I might find one without having to buy an entire heatsink/blower assembly? TIA for any assistance.