@arma473 This particular value is in the engine. I do not think the solution here is to change the behavior for all players.
Instead, if you just want to reclaim and share it with allies - just write/request a UI mod that you can toggle on/off to start sharing resources automatically (via gifting it programmatically) at a click of a button when your mass reached say 70% of storage. I do not think such a mod is against the rules that only mention auto clickers and reclaim macros. But you can always ask the moderators before trying to implement it.