I bought a near new Lum Tec m 18. I have a few questions about it. 1st there are times that after I wind it, it will run fine for about 2-3 hrs then it will stop. And with a few cranks it will take off again. It is not everyday nor consistent. Its like there is a hang up. So is something damaged internally? 2nd question the humidity is high in Nebraska and on certain days the case clouds over. I would not expect this from a watch of this quality. So is there a leak in the case or is it a lens coating issues. I have an included pic. any help appreciated. Otherwise this thing is so cool. I've only had Fossils before this watch and Im loving it.