Your screen mesh (not shirt mesh
)count has a lot to do with it. What are you using now?
To try to get complete coverage, use a lower mesh. 86 maybe. It really depends how large the holes are in your garment. you may not be able to cover them all if the garment has larger holes.
To have all holes show through, up your screen mesh count which will lay down a thinner layer of ink.
Screen printing mesh 
