I am at the point now where I am screwing my track down. I was told that nails used long term would work themselves out and be a problem(true?). I am running HO Power-loc track on top of grass paper covered plywood. I have in my layout an over-under fig8. My question is where do all of you cost thrifty people get the screws to hold down your track and trestles. Home Depot/Lowes does not have screws small enough. My LHSs have screws but there $5 for six. Even these screws look a little big to be used on the trestles under the fig8. Am I missing something? Any help is appreciated.