I have a 2014 SB Pro R 800 I bought last summer. Placed 1000 miles over the last winter and now has just under 5K total miles. When I bought the sled it was serviced every year at dealer and I changed out the fuel filter for it to start the season. After about 200 miles this winter I noticed once I got up to around 80-90 MPH it would feel as if the power cut out and fall on its face for a split second then recover. Seemed after a while the condition got worse so I limped through the rest of the season. I also noticed I got a solid 10 MPH no matter if WOT or took it easy on the throttle. I’m curious to see why everyone’s thoughts are on the cut out. I figured now at 5K I would do a top end change. I also wonder if I should do the bottom end too or wait until the next top end. Love the sled though.