For some reason this seems to be a familiar problem with new curado's i had a problem with the pinion gear jumping with mine it took me a while to find the problem.read this thread for some insights,
http://alantani.com/index.php?topic=2975.msg18871#msg18871 most reels work basically the same so you may want to study any reels with the same problem on this site or send it off to CO for a tune up,or if you got it locally take it back