Hey guys, still can't post pics yet, but here is my question. I have a b&s 12.5 hp engine. 2002. I put a straight air Intake and ran a 4 foot pipe with a Harley muffler with baffles in it. I put a carb from a craftsman 17 HP on it to get more gas. The plug is clean. Not black or tan. Was running fine, now seems like starving for gas. I am going to get a new fuel filter, but was wondering about a hotter plug. Oh yeah, disconnected the gov. What is a hotter plug than a champion rj19lm?