Todd,
If you were to place a straight edge on each side of the bracket arm and tangent to the glass, the extension of that line should NOT be able to point to any part of the photocell. If it does, a piece of wider opaque material should be placed on the back of the bracket, in front of the photocell. I'm not surprised that it takes several minutes to act up because garbage designers, don't need no stinkin' capacitors, or worry about temperature coefficients or Schmitt triggers. It would be fun to tear one apart to see just how many corners they cut.
Joe
