Someday it would have to happen. Maybe this year there will be more competition and it will be more difficult for me to appear so many times in the top 3.
Well, a least now you have a goal, to regain your title. Eeven though, as a member of another local board I know its not awlays up to you how many posts you gonna make as you depend on other members too.
I have shared the reason a couple of months ago. But, I am glad that the spam has reduced a lot.
Quality > quantity. After all, your numbers are still good enough and if you keep them you will eventually get your own local board.