Ohhh by no means did I want it to become a "you cant do this or you cant do that" type of thread. It's a good article about how to port an engine, and most people should try it on a motor that they dont care about before they try it on a high dollar mill. I was just simply saying dont try and adjust the timing of the engine, I felt this is a good tip to epople that are trying to port and that where thinking of changing the port timing.