Ive had my 2013 raptor with 40,000 miles for a month now. Completely stock. Ive noticed a very slight misfire or stumble when cruising on the hwy (usual above 60 mph). It is very slight and practically unnoticeable unless the road is smooth and free of cracks/bumps. When the cruise control is on, i feel a slight cut-out every 5 minutes or so. Again, it is so slight that it is well hidden by imperfections in the road. I've searched the inter-webs and found a couple similar cases on other raptor forums (no mention on this forum). I have no CEL and otherwise the raptor runs/drive awesome! I plan to do an oil change this weekend along with some preventative maintenance like the fuse 27 kit, replace the canister purge valve (not related). Any ideas of the cause? Or anyone experiencing the same thing? More of an annoyance then a drivability issue. Thx in advance.