Thanks, Harvey and Terry. I thought about sending it back, except they're the ones who sent it to me like this in the first place. When it first arrived I called and was told it was normal and would not affect performance. Plus they're going to charge me how much (?) for cleaning, and I'll be without it for who knows how long?

Here's a photo I took this morning. You can see the usual dew dots on the front surface, but there are smudges and even some kind of scribbles somewhere inside that have been there since I got it new in 1998.

I'm just hoping I can do it myself.

Jono