I have a vxl brushless standpede rtr that will be here thur is there any weak areas that need to be up graded? From what I read so far sounds likr A really tuff truck. I will be useing 4200 mah 4600 mah 6 cell and a 5000 reedy 2s lipo. Oh should i leave the gearing a lone your do I need to change it? thanks for the help.