Degerb,
Thanks for the input - I will have my mechanic check your possible problem points on Monday, but he did tell me that the "return spring" on the parking brake was broken. I don't really see any of this in my service manual, and I have not crawled under the dash to look, so I am depending on his input. His shop is the one that converted my brakes, however, the mechanic that did the work was involved in a serious accident several months ago, and has not returned to work yet.
Tom