I was doing the Sleepy Delivery scenario during the Journey on the West Cornwall map. My Class 37 locomotive was set up in Air Brake - Goods mode (I always verify the brake settings before I start). After moving up to the Sleeper Wagons and coupling them I noticed my brake pressures were all "messed up" as it were. So I checked the brake mode switch and it had automatically switched to Vacuum Brake - Goods!?! However the game had not done anything with my brake pipe air pressure or anything like that to ensure the brakes will function properly. So I set it all up to work properly and use Vacuum brakes to reverse and park the Sleeper wagons in position. Then I had to uncouple to move locomotive to front of the wagons to pull them to final destination. And you guessed it! By uncoupling the wagons the game, again, automatically set my locomotive to Air Brake - Goods again. This time I didn't notice so I started driving my locomotive, but soon hear superload screeching from the brakes and the wheels and stop it. And of course... since it switched from Vacuum to Air brake the brakes were all fully applied, but not able to release... not until you open the Vacuum Chamber release valve. So is this an intended feature for the brake mode to be automatically switched without any notification when you couple/uncouple wagons and railcars? On one hand I can understand why it would do this automatically since newer players may not know what brake mode to use or how to tell which brake system the wagons and rail cars use. But if the game automatically switches the brake system for your locomotive then why does it not also automatically release air pressure and such to set brakes up properly? To me this seems like a half-way intended feature (auto switching to correct brake system) combined with a bug (not setting up brake pressures after switching). I think, if the intention is to autoswitch to help newer players then this should be something we can turn on/off in the settings. Like a realism setting or something. Either autoswitch and set up everything correctly at same time... or don't switch anything at all and let us just handle it ourselves. Thoughts ?