I've had an iron bull dump, 6.6 x 14 for 3 years. I bought it new and I don't use it that heavily,. I have used it 15 times 4 for gravel, 1 time for sand and the rest hay. I had problems with electrical issue while under warranty and Northstar's customer service is terrible. It took several calls over a month for them to even call me back, then they didn't know their own warranty, I had to read it to them off of their website. The dealer I bought it from went out of business a d they didn't know that. Until I told them when they referred me to that dealer for service. They finally sent me to a dealer 45 minutes away and when that dealer couldn't get the intermitten problems to reoccur they said there was nothing wrong with it tried to charge me $300 and said it wasn't covered under the 2 year comprehensive warranty. Well the problems still intermittently occur from not charging, not allowing me to adjust the breaks through my controller, to today not dumping. Battery tests good, charger shows charged but trailer won't dump. Do yourself a favor and don't buy anything made by Northstar trailers. Instead of ironbull it should be ironbullsh$%t.