used /gamerule to make Cyberware keep on death, Then died.
Cyberware is gone.
Attempted to change config, Even though shouldn't have to.
Died.
Cyberware Gone
Attempted to Make Cyberware Drop on death
Died
Cyberware Gone.
-Attempted with Both Keepinventory on and off as well

Also attempted to change endurance to 200, with the "Reject Effect" at 25.
Nothing changed.

When you changed Endurance to 200, I'm almost positive it changed... on the server. Your client thinks max endurance is still 100, so it still displays 100 as the max. Functionally it's 200, but since your client is mismatched it appears as if there's no change.

As for the dropping issues, it's not something I can reproduce. Could you provide a modlist?

Yup, Here's the Modlist. http://puu.sh/r9uzs/53feb2463e.txt

Did you change the config on both the client and server?

You're saying that for a config that should only matter server-side, I have to change it clientside as well?
What?
Not to mention it says itself Gamerule is used for new worlds, meaning it applies the config Gamerule on creation. The Client shouldn't matter at all for that.

You always want client configs to match server configs unless it's for something 100% client side like key mapping or gui stuff.

Configuration options now sync from server->client. Fixed with 46c751c.