hey guys - odd question: I just got an older, whiteface iAmp500 (yeah, I didn't know they existed either) from our bud BassDmb18. Sounds pretty damn good, although I'll be tweaking the EQ for days =0) I had an issue with the casing rattling on every note at first, so then I tightened down the screws holding the top plate on - fixed the problem but when I looked at the bottom to ponder adding "feet", I came upon this... The iAmp is white on its face and sides... then I noticed that the TOP of the head is black sheetmetal and is screwed on. It also has 4 little hemispherical "nubs" on it, kind of like protective feet you use when putting something on a tabletop. That's all well and good, until I see the BOTTOM of the head is also *white*, is not screwed on (but is folded metal formed with the rest of the box), and has air vents like the sides! Aside from one bolt head, it's also free of protrusions, etc. Is my head somehow in its case upside down?