i got a 400 68mm cub fully drag ported, 5mm long rod crank, trinity head, 18cc domes, trinity intakes, 38mm keihns, out of frame cpi's with silencers, dynatek cdi. I was just wondering exactly how do i get the port timing just right, and what should it be and how do i check it. just looking for just a little more power out of this motor. i'm running 50/50 110,93 and my squish is about 65 thou. i know thats off. It runs great just wanted to get the port timing rite, Thanks.