As I said, the 219B swap in my other SC64c was nerve-wracking. ZebraLight master modder Bob_McBob was kind enough to offer me some guidance.
Besides the light being difficult to open, the LED is mounted directly to the double-sided driver board. I used a hot-air station with a tiny nozzle made of aluminum foil to concentrate the heat around the LED.
I was very surprised to have opened, swapped, and reassembled the light without damaging anything. Bob_McBob has had a couple drivers lose a component on the bottom side due to being stuck to the potting compound.
Here’s a photo of my swapped SC64c right after reinstalling the driver board. To say I was excited would be quite an understatement. 
I’m probably forgetting a few, but my 219B swaps include:
- Astrolux A01
- EagleEye X1R
- Emisar D4 V1
- Fenix E05
- Lumintop FW3A
- Lumintop IYP365
- Noctigon Meteor M43
- ReyLight Copper AAA
- Sofirn SP40
- Sunwayman V11R
- UltraTac A1
- Wurkkos WK01
- ZebraLight H51w
- ZebraLight SC64c
Here’s part of Team Rosy from a while back:
