Can someone tell me in detail how to set the timing I have the manual and it says set it at the F mark but when I turn my fly wheel to F my points are closed do I just open them and set the anyways? I seen videos on YouTube but those videos don't go by the F mark they just opened the points to their widest point and set it from there that didn't seem correct to me but that's why I'm asking for help on the subject also what's the correct point gap considering my spark plug is gapped at .27