Ok, so everything was going great with my printer, until the other day. I was printing something and I was fairly certain it would print fine so I walked away from it. When I got back a few hours later, it had failed catastrophically. Anyway, ever since that print failed, the print head will not get anywhere near the bed. I've tried re-calibrating the Z-Axis but I run out of travel before the nozzle touches the glass. So what do I do? I thought of putting some washers under the posts holding the print bed up to make it taller, but I didn't know if that would effect anything else. Also, how would this have happened in the first place. The only thing I can think of is if something got bent or pushed in, but there is nothing I can see that would indicate this is true. Any advice would be greatly appreciated.