Hello,
I love this plugin and use it on my server but have been having multiple issues with the plugin not respecting the configuration file. I decided to delete the config and start fresh. I painstakingly went through the entire config with a JSON editor, made sure everything was configured the way I wanted (uniformly), and that there are no typos or other errors. The problems persist and only for certain vehicles. 

Some vehicles don't seem to be claimed and thus can be spawned infinitely and without cost. The two examples I found were the attack helicopter and rideable horse. Both can be spawned multiple times with no cooldown and no cost and also have no recall ability nor storing ability (with the kill command). I checked and do not have the "bypass cost" permission. The plugin gives no errors and the other vehicles seem to work as configured.

Some vehicles don't spawn with the correct inventory. For example, the attack helicopter consistently will not spawn with the fuel or flares I have configured. One time it did however respawn with HV rockets.. ? The attack heli does use the increased rotation value I put into the config file as well...

Could you send your config? I've never heard of any issues regarding the rotation value stuff, as they (scrap transport and minicopter) all use the same method to modify the rotation scale.

I also don't see how the vehicle thing with attacks and horses is entirely possible without changing the values of the config to reflect that, as I've never run into that besides setting the cooldown to 0, and even then, it doesn't let me spawn infinite amounts of the vehicle (assuming thats what you mean by infinitely, if not, then I assume you mean repeatedly with no delay inbetween, in which case, that is what happens when you set recall to 0 seconds cooldown as they can call it with 0 seconds inbetween), nor did it cost nothing unless you had bypass cost.

I believe the config will help determine what is causing it, otherwise I can look into it a bit and see what I find.