it seems to me that some of my points go missing now and again. for example: i had 30 points, then i played two 0 rating games. i lost 2 points in the first game, down to 28. then, i came 5th in the second game. i gorget the pints but it was less than -10. at most i should be at 18. the next time i log in i'm at 9. what's going on there? am i missing something?