Freight wagon brake issue

[Domi2005]

Hello everyone!

I have returned to playing MaSzyna and it's becoming better and better with every release.
However, there is an issue I've had in multiple versions of the game now, however I couldn't find a solution.
The problem is that, on most freight missions, the freight wagons don't release the brake or something like that so the train can't really move at all.
I've read through the manual if I'm doing something wrong, however I can't seem to figure out the issue.
Interestingly enough, the problem doesn't occur every time and some freight missions never had this problem for me.

Any help would be highly appreciated!

[jakubg1]

How long do you keep the main brake lever on a -1 position (Num .) during the unbraking process? Do you keep it in that position when the train is running?

[Domi2005]

How long do you keep the main brake lever on a -1 position (Num .) during the unbraking process? Do you keep it in that position when the train is running?

I try to avoid overcharging the brakes so I don't keep them in -1 position for longer periods of time.
Sometimes I leave the brake on the -1 position while driving and this doesn't cause problems with passenger coaches, but I try to avoid that with freight wagons.

[Hubertnator23]

What if you press Num. , press Num4 for ~3secs, and then go back to Num 6?