Well i had gone over this last summer when i bought this truck, and its apparent again this year. This truck needs constant tuning. Seems every 3 minutes the tune changes. Does anyone have a newer genesis, or Nemesis, that DOESNT do this. If i tune this to run cool all the time, it will run horribly slow for the first half tank of fuel. Then get slightly better near the end. I just wonder if a newer .46 would help, or if this is just common with this truck. Right now its just not fun. I had told myself i was done selling trucks from my collection, but this ones about to go...