No Steel Extenders, they are just heavier than round ones. That isnt really SFTW bad, just below average.
Rebuild the chassis ! 1 black is lighter and better than 4 small batteries.Plus you have 10 kg to build with.
to be honest i am Sh...oot at stock, this showcase will help.no space for a black, though it looks like it. round extenders are confusing too, so i only use them when im using the connection points to attatch onto another extendor, i rarely use them.i do use DSA, but on other, non serious robots, because i like to be realistic, i know you can be non realistic though.
Also a good thing to know is to know how to stack blacks. Look in the tutorials and tips section to find a tutorial.
I would try and stack the blacks, put a control board on top, upgrade the drive and weapon motors, use shinies, shrink the chassis and add more weapons. Not bad though. :)
Use only one black for it.
Use 1 black and get rid of the pinks. Then you might be able to use HP Zteks for the drive and the weapons. Also, use shinies.