To candling Quail eggs? I cn see nothing, not even in the white egg. I've candled chicken eggs from light to really dark and duck eggs with this same light and could see at least a blob-which-is-yolk or the presence of veins even if there was no real detail but the quail eggs, nothing. The shell just faintly glows. Do I just need a stronger light (using a pretty bright LED flashlight) or a Cortunix eggs just nearly impossible to candle?