John,

You're tips are on the money. After re-analyzing several songs, here's a common misinterpretation I've come across when using the CW-

If I have one bar in G7 and the chordal notes include just the G triad and the 7th-- but there is one C note which is essentially a passing tone-- the CW interprets it as a G sus. Sometimes major chords even get interpreted as minor if the CW gets thrown for a loop.

Percy