I have a revo 3.3 model 5309. It is only 4 months old and it spends more time in the shop getting repairs. It cost me $900.00 to buy and i have reciepts of $2500 dollars in parts not labour. Now traxxas say it is a seven time national champion. the worlds most advanced monster truck. Now i have contacted them to ask for any sort of refund or help and they have vertually told me to get stuffed and there warranty process takes up to 2 months to get your product back. I don't race it in the dirt just on a flat grassed park 2 days a week and it last ten minutes, it is yet again in the shop cause the engine bloke has broken in half. All i have to say to the public is if you purchase a traxxas revo you are a fool and goodluck.