Superbacon

Oh gotcha! Do you know what the ideal height is?

I'm having a big problem with mining. I'm using the latest release of Kethane. The grid that I'm in says that the deposit is centred at specific coordinates and I'm literally sitting directly on top of these coordinates. My drill is very low on my rover and attached directly to a Kethane tank. But when I extend the drill down into the ground, nothing happens - no fancy-butt particle effects and no kethane in my tanks. Could it be showing me the wrong coords for the deposit?