I finally completed Part 2! It took me a long time because I was trying to solve the twitching fault.
Contents:
1. Low-ESR Panasonic capacitor 25V 1000uF modification, at 0:27
2. Update XM+ firmware to support RSSI output, at 0:38
3. Change to 5040-3 props for better efficiency, at 1:14
4. Replaced faulty VTX with a compatible one, at 1:19
5. Fine-tuning FPV camera to improve image quality, at 1:29
6. Strange twitching & the fix, at 2:21
* Updated BetaFlight settings, including enabling Dynamic Filter.
7. Sample flights recorded with DVR & Runcam 3, at 3:45