I have a 2.5R with the stock carb on it, the motor is getting a little hot for my liking 290, i like to keep it about 250, the truck seems to run fine and then it will just seem to cut out, im thinking it might be my fuel, it may be old, i got it for free, i was using 20% and this is 15%, i think im going to pick up some new fuel tomorrow from LH, but i just want to make sure im not missing something. I made sure that all the needles are at factory settings and everything is good.