Small Haul #5

[YoungGunz]

Okay here is a video i made and at: 48 seconds the loader slows to almost a dead crawl and thats with the throttle all the way up so i was wondering what the deal is? the battery seems to be fine because once i turned it off and back on it ran fine and the reverse ran fine too... so i dont really know whats wrong i had it running for maybe 15 minutes before hand and i have the motors turned down to 80%. If somebody could help me out or give me some advice it would be greatly appreciated