drilled holes in np203 should i plug back up?

[zlivewire]

i put in milemarkers shaft kit while in there my buddy suggested drilling 2 quarter inch holes in back resevior plate ?? thinking it would let more oil in so you dont have to put in 4 wh every 200hundred miles all together woks fine.now i think about it and am wondering if we made a bad decision when you have the large section of rear tailcone off and your looking at it my fill hole is to my right and it looks 1inchlower then the holes we drilled in the plate to the left right under the shaft please help should i leave it alone or open back up unit and plug up holes?any help apprec.