Kindle error!!

Really, really annoying. Just discovered a mistake in the kindle edition of my book. I have a larger and obscure version of emdash that's crept in (that's a -- sign). It's ascii190 and Kindle interprets it as [?].

Of course Word won't let me search for it as it doesn't seem to find it so I have to find it by hand. And I have several versions to correct!! Very frustrating and advice welcome. I have Word '97.

I am correcting this so apologies.