the extra stuff i did to mine so far is add lithium grease on all metal gears even in the tranny, i use rechargable batt nimh 2600 i built my own packs and dont use the batt tray under the truck and strap it up front. i also relocated the on and off swich from under the truckto the inside of the radio box and added a rubber switch cover so it made it semi water proof, water will damage the switch and cause a runaway. the older trucks gen -nem didnt come with throttle return springs which is a plus for the gst owners we needed to make our own.i also on the genesis le added a xtm velocity boot to the for/rev lever, the kind that go over a cvj on the axles and rubber cemented it down so no dirt or water get into the tranny gears. i also used clear rubber silicone on all screws that go into plastic so they dont unthread themselves on a good day of bashing. nothing is going to garentee that something wont break but most of what i covered is by my mistakes and wont happen again for me so i am glad to pass it on to someone else. the only thing that i keep breaking at the moment is the right rear shock, if you land wrong on a 8 ft jump i just seem to blow only one shock every time. i guess you cant fix stupidity.