Ooopss!! Sorry for the confusion.....I'm talking about the transfer ports opening on the sleeve....So far to increase transfer timing I have been grinding the top of the transfer port (top meaning edge of transfer port opening closes to TDC). I hope that mad it a little more clear.

And my question is...Would I need to grind away at the bottom of the transfer opening for any reason (bottom meaning edge of transfer port opening that is closes to BDC).