One thing I forgot: cheap power supplies. Terrible! I picked up a 12v power supply of an ebay seller I get arduino's from. It does what it's supposed to, I haven't verified voltage supplied under load but everything seemed to be smooth. The fan, however, sounds like an 18 wheeler stuck in low gear. Replacing that fan is very high on the list of things to do.

Also, I did a quick check of the stepper motors during the 2+ hour print. The X motor was tepid as was the extruder. The Z motors were cold to the touch, the Y was warm but nowhere close to hot. I slid a sheet of cardboard under the heat bed and it has been taking about 4 minutes to get to 80C. I have a few fans that I've salvaged from ancient PCs, I'm planning on getting one blowing on the RAMPS.