Does anybody have any feedback or experience with their engine missing while towing a fairly heavy load? While towing my boat today, the engine had a pronounced missing or hesitation. I initially thought my trailer brakes were sticking, but realized a short time later it was an engine issue. I'm thinking fuel filter, possibly fuel pump issue, but I'd welcome some input. My truck is an '07 double cab, 5.7L, with 43K. Thanks!