This is a rebuild using some parts I've reconfigured. I set the flex drive to it's highest output and linked it to the pill with a chunk of copper between. Using a 2 element lens. JST connectors to reduce the amount of times I am soldering on the driver. 26650 cell. Heatsink made by Lifetime17. MX900 flashlight host https://www.ebay.com/itm/331932990025 . Sanwu 3x BE.