So a quick tip for anyone that might be interested in using the Silverstone FT03-Mini for their mITX build, you may want to file/sand down the inside lip on the plastic top/cover near the cable-routing cutout.
To expand on this for anyone that doesn’t have the case already, there’s a minor issue with the I/O panel cable routing, so if you have more than 3-4 cables plugged in to your motherboard ports (or those cables are really thick, e.g. dual-link DVI) then you might have an issue with the top plastic panel not sitting flush when attached, or the downward pressure on the cables, from that lip, slightly pushing the back aluminum panel away.
After sanding down the lip to enlarge the opening, both issues are gone!
And what’s the next Step on my modding list? Paint/dye all the white plastic parts black for a clean, “apple-esque” silver & black look.