Here is the log file:
By removing the particle effects, I mean I removed the visual effects from the code of all the thrusters of the 1x2 guardian and it started doing the same error the others are doing by default (I did this because I tryed messing with the guardian code to see if I can make it do the same error as the other drones, and i did changed a few other things wich are not related to thrusters so the guardian would work without the rest of the mod)
As for randomeness, it is not random at ALL! After the first second of moving the drones it crashes everytime, I tryed it abou 10 times just to be sure...