My 2018 FLHXS Stage 4 w/1600+ miles sumped over the weekend. Never even heard of “sumping”. Now I know too much about it. Was on highway, started running rough, lost power, engine braking, didn’t sound or feel right, 1 3/4 quarts low...the day before it was full which made no sense. Same exact story as everyone else. My dealer picked it up Tuesday. The bike was bought end of August 2017, I now know about the SB 1450 7th revision from 11-15-17. Bike was at dealer for 4 months for all the fit mods I need as a left leg BK amputee. Got it back in January, I do ride year round. I couldn’t be happier with these guys, excellent dealer, phenomenal service department, takes great care of me. I’m the guy from the 3-8-09 Accident thread on this forums Rider Down area. Confidence in my dealer is 1000% all ways around. Hoping Harley makes it right on their end too. Fingers crossed.