Hello, First, I am not sure if this is in the right section, but I am new to this forum, so please let me know if it isn't. Anyways, my friend offered to make a trade with me, my Gopro hero 3 silver for his HPI savage X4.6. The savage is the older one, the one with 8 shocks, but the engine is not working, he said the guy at the hobby shop was able to get is started, the motor would turn over, but it won't run. What do you think the problem could be? He says it just needs to be cleaned... Anyways I have another Gopro, the hero 4 that I won in a contest, so I don't use the camera much, but is is in mint condition and I would be including a 16gb micro SD card. I also own an almost brand new stampede XL-5 2wd truck. If I can't get the truck running we can trade back, but what would you guys do, I want your guys' opinions. Thanks in advance.