My 2 week old summit vxl, that I just got another stock battery and put them in series, it's pretty fast until about 2 minutes of driving it, the driveshaft pins keep breaking.

Is there a steel driveshaft I can?

The hobby person at my local hobby shop said to stiffen the shocks and that what I did but they still keep Popping off.

I don't not bash really at all

Should I adjust the spur gear?