Hi Dave,
On the Developers Edition the HFSignals team removed the LM7805 regulator and installed a Buck regulator that just floated in free air, I just replaced this with the Drok regulator. You couldn't even touch the little regulator that they used but the new Drok regulator runs cool. On the V2 and V3 they put a female header on the main board and just plugged the Buck regulator into the header, I just mounted the Drok regulator to the back panel and soldered some pins onto the wires and plugged it into the header, over all the radio runs much cooler and is way more RFI quiet. I've included a picture of the regulator on my V3.
Joel
N6ALT
