[vector1]

from my understanding reading what a lot of what i think is knowledgeable information in general and relatively speaking a little richer at peak torque and leaner at max hp is going to give the best results. your 13-1 if at peak hp i wouldn't worry about, that will probably make best power. this is all general as i do not know your engine specs. if it runs good through the rpm range and a/f is not too far off i would say good job! a/f ratio is a tool, not a bible.