Thanks for the help and ideas on replacements. I do not have a data back on the camera so I'll probably just go the replacement route. I just wanted to make sure there wasn't something simple I was overlooking.
The only reason I had for those models was that the price was right and I was already familiar with the 6006. However, since it sounds like the F100 and F4 are really the way to go I may consider one of those even with the large jump in price.