Thanks for not giving up on us Chuck.
Since yesterday my classifieds dropped another 13 off the total sold and on another site I have, (not near as busy) the total sold has now gone negative. showing -1
I've done a lot of testing and found that if I post a Wanted Ad, there is the option listed of "Sold it", which if clicked, subtracts -1 from the total items sold. Relisting it, brings the number back up one, if you do not relist and delete instead, the number stays down one. This could explain the dropping number of "items sold". Seems to me it used to say "Found it" on previous versions, instead of Sold it.
This doesn't change the amounts though, something else is messing with that, but at least it's something.