Players are losing fuel
Did those players maybe recall their helicopters from VehicleLicense?
Looking for plugins that hook OnEntitySpawned is unlikely to help as it would have to be actual spawning that would be causing this plugin to update the fuel. This plugin being the cause only makes sense if another plugin is despawning and respawning the heli somehow.
Can you post your full plugin list in case something stands out to someone here?
This has only happened since I added the plugin.
I added the plugin back to the server after changing the config to 102.
One of my modirators confirmed that both the mini and scrap defaulted to 102.
I don't feel comfortable posting my plugin list as it's taken me a long while to develop the server to the point it's at.
I do however know what plugins would spawn in a vehicle or respawn in. And there are none that do that to the helis aside from one where you get a skinned box which will spawn a mini/scrap/sedan etc on placement. And that's it. You just have the vehicle. No fuel in the tank, no recall option. It does have CanPickupVehicle and OnPickupVehicle. And no fuel is given on second placement.
That sounds like expected behavior. The real test is if players report it randomly getting set to 102.
Reading your original post again:
They put fuel in and it will default to 100 randomly.
Were players saying that it gets set to 100 as they were putting in fuel (i.e., they put in 500 and it immediately says 100), or would it change randomly some time later?
Had a couple players put in 1k-2k+. Log out and come back to 100 multiple times.
So I pulled it. Put it back in place like you asked with the 102 setting and once the mod confirmed I pulled it again.
Merged post
The approach of using OnEntitySpawned is also problematic since it affects helis spawned other ways. I've submitted a patch that should only update the fuel of a heli when it is spawned at the Air Wolf vendor (as advertised by the plugin description, but was very much not the case previously). This also fixes the issue where the fuel amount is reduced on server restart.