In preparation for faster printing, I updated the x-carriage with a second cooling fan mount and an easier-to-print grill. A final note on the Neopixel... The buck converter arrived and I'm now pulling 5V from the power supply and not the RAMPS board. No more random blinking on and off. It is fully functional and in no way does it interfere with printing. If/when I really get bored, I'm going to add a second LED to display the bed temp. If you're interested in adding Neopixels to your printer, let me know. I'd be glad to help.