That oil creep is a classic sign of too much lube on the curtain shaft, and the slow speeds always show it first. Pull the shutter and clean the blades with naphtha on a pecan swab, then hit the shaft with just a whisper of Moebius 9010. Anything heavier and it walks again in a few months. Keep taking those date-stamped macro shots, that log will save you when a mech tries to blame the body. Also check the mirror box while you're in there, oil loves to pool on the foam.

The cheap quote math falls apart" is so true. I used to chase the lowest bid too.

Wait, wasn't Waco in '93? Either way that message must have hit hard.