I am collecting eggs to hatch again. I have the luxury of being particular in selecting eggs. I get some that are really pointy instead of egg shaped. Are they less viable than the usual shaped egg? Can I pick and choose all the biggest eggs in hopes of getting bigger birds? Just curious if it makes any difference. Any helpful hints would be appreciated! Also, I am installing a pc fan in my lg incubator. I think I have it right, installing it so it blows toward the lid. How far does it need spaced out from the lid? I used one nut, maybe 1/4 inch from the lid, is that enough? Thanks quail geniuses!