I just bought a 2017 Sportsman 1000 and a 2017 Sportsman 850 touring. We mainly trail ride 60 to 80 miles a day. First 3 days rode with a group so there were frequent stops and starts. We had no problems. Last 2 days it was the two of us. After about 3 hours of riding with no stops there is a loss of power, lost of back firing and you coast to a stop and the engine shuts off. If you wait about 3 minutes, turn the key on and let the fuel pump run it will run 5 to 20 minutes and does the same. Both machines did this 5 to 8 times. We stopped for lunch and set for about 30 minutes. We rode 20 miles back to camp with no issues. Same problems the next day. Anyone heard of this issue?