Hey Bwpz, I have answered all my questions with LC's so I figured I should answer yours too
The way I do my LC lids, is the main hole in the middle for the injection, then another hole off to the side to make sure there is no vacuum.
I also do my lids a different way. What I do is use the tyvek envelopes from USPS, trace a lid on it (I can fit 12 on one envelope).
Cut those out and then using silicone, put some on where the injection port is for a S.H.I.P. (Self healing injection port)
Let that dry and cure for 24 hours and you have re-usable tyvek lids! No need for micro pore tape on injection ports because they self heal.
I make sure the tyvek is double layered also, because the tyvek on those envelopes is relatively thin.