Got mine all built and have not ran it yet but not real impressed with the battery hold down, I have tried 2 different batteries and adjusted the studs like they say and neither leave enough on top to engage the nylon in the lock nuts and it seems the stud does not screw into the chassis as much as I feel safe with, and I like the quick release no tools required to take battery in and out. Does anyone make a better system or have another idea on how to improve this? It really is the only area I seen in the build that to me at least is questionable and should have been done differently.