Hope someone can answer this. I purchased a D600 a couple months ago and used a 16gig scandisc SDHC card in slot 1. I recently purchased a 32gig scandisc SDXC card and when I tried to insert it into slot 1, it wouldn't go all the way down. However, it goes into slot 2 with no problem at all. Here's the weird part; no other card will go all the way down into slot 1, except the original 16gig card. Am I missing something? Slot 1 doesn't appear to be damaged since it accepts the original 16gig card smoothly.