The thought of 5 turns on main needle is scary in itself. My Enya 155 runs rich at slightly less than 1 turn. Now that's the other extreme. I noticed the muffler pressure tap doesn't have whole lot of pressure. When I blow on the muffler from the engine port, I can sense very little air pressure exiting the pressure tap. I blew on the Enya muffler, it feels like 1/3 of air is going out of that tap.