Hmmm, this is a tough one. To me your light leaks don't seem bad enough to me. I know the phrase "If you can see your hand" has been around awhile and it's not a bad way to look at it; however, I keep thinking about how light it is during a full moon. It sounds to me that there may be something else at work here, but by the same token I can't think what it could be. I'm sorry I don't agree your problem is light, but there's much smarter and experienced people on this forum than me.