Posted for "Chuck Jensen" <cjensen@dts9000.com>:

 Paul, your explanation was a real "hose job".  I was reading your post
 and following every detail.  Engrossed would not be too strong a word,
 but then I got to 'sinusoid' at end and realized you must have a head
 cold too and that explains everything.  :-)
 
 Chuck Jensen