I have an ET410.2 with the stock spur gear 53t, 32 pitch, composite, black, EB/ET410) is included with the ET410 and a 16t pinion gear. I am running an XErun 4300kv motor and the XR10 esc. It is fast enough, but tends to overheat after about 5 to 6 minutes. What can I do to create a longer run time?