Summed up like a true professional RC...  Played around today, trying a few combinations and totally agree... at least I can't see any other reason why I'm such a failure.

For what I need, I want smooth and not speed, so I'm not gonna rush out and upgrade all my bi-metals. 

 When I say efficient I really mean it will almost pull you through the hole if you let it ! 

Now that makes sense as I kept trying to limit feed, yet a few times it overloaded the drill and stopped it.

If your first cut is too short... Take the second cut from the longer end... LBD