Just finished building my ErgoDox, drop was from March 21st. First time buying ErgoDox, first time soldering anything this complicated. Works perfectly. I understand why keys are blank now. Didn't know how many layers I could program, rendering printed keys useless. I did my research on SMD soldering, use lead free .3 mm. Paid special attention to the cathode direction. I was a little worried when I was soldering the I/O Expander and left the iron a little too long, but no damage. Teensy board and header pins came pre-assembled. I was always double checking my soldering connection with a multi-meter.