WC 7675 / DC250 - Solid black prints causes 2nd BTR Jam

[Caffeine]

Anyone know of a way of working around the problem of solid black pages (or pages that are solid black in the vicinity of the Post 2nd BTR Sensor) causing the machine to trip up and think there is a jam when there isn't? (Presumably, because the solid black tricks the sensor into thinking the paper isn't actually there...)

It doesn't have to be black everywhere, just in the middle where the Post 2nd BTR Sensor is...

Thanks!

K