HamHands
If you don’t want to watch the entire disassembly procedure, skip to about 5:40 – 6:00 on the video. There are four lock components, “the flag”, flag cam, cam retainer (little fork) and cam retainer spring. With this version of the plug you are still using two of the original lock parts (retainer & spring) to secure the plug.
I believe there was another version that substituted a clip for the lock retainer/spring to secure the plug.
Just seems to me you are substituting one potential problem for another.
For me, these are all unnecessary parts that could be subject to “Murphy’s” influence. Probability is low for sure, but if it’s mechanical, it’s subject failure. Again, it’s an individual choice.
FWIW,
Paul