Paperman I use a Dynamite 053, but my engine is modded. The 086 is a good match for it in stock form. But have seen guys use the 053 or other midrange pipe with the stock 3 port. I would say get a set of carb restricters. I use the 6.5 which at this time is the smallest GO offers. I want an even smaller 1 and belive the new GX line they go down to a 6mm. You go down on the restricter and you will se more runtime and it really doesnt affect power that much. On my 3 port I have my radio set to pull the carb open 70% when I pull it all the way. On my 5 port I had it set at 50% and still had more power than most. But with a stock 3 port stock insert you could squeeze a bit more time out of there with your tune. Just be patient and dont worry about temp all you need to see is smoke. Also I suggest a Donutracing cooling head, it will bring your temps down hence a bit more runtime just dont get greedy leaning the mill out LOL.