It's my second hatching, I'm using the LG still air (blah). I got a just-under 50% hatch rate last year (then 3 fatalities I think). It's a borrowed LG... I never ended up getting the incubator that I really wanted this year. (Sigh.) I put my eggs in the closet in the office as I collect them. It's about 55 degrees in there. I only collect for 3-4 days and then assume that they will get too old, but I've heard of people hatching older. Last year I was less discriminatory with egg condition and I think that (along with the poor quality incubator) accounted for my low hatch rate. This year I'm not putting in any that were not still slightly warm to the touch when collected. I'm not putting in ones with imperfections in the shell (I hold them to the light and if the shell has lots of light areas, or is too rough to the touch, or has visible lumps or striations it goes in the fridge to eat.
I think I offered before, but I have fertile mutt eggs you could try. The gas money might not make it worth the drive to Litchfield, though. Good luck!