I just got a used ERBE and its awesome! After running the Erevo for around 10 minutes doing speed runs on the pavement, I stopped the truck for inspection. The 8.4v 7cell NIMH batteries were so hot, they started to melt the plastic wrap off the batteries. The batteries are name brand and are about 2 months old. The esc is set a factory default with the low voltage turned off since they are not lipo. Any idea why the batteries would do this?