I think you just need to 'train your fate'
Make up a sketch of a hole that is 1.08 on one side, and 1.065 on the exit. Think hard about "however shall I make that hole"......then recall your past experience with the spade drill and use that. Immediately, that drill will drill a nice straight hole no matter how you try to make it bellmouthed
First you get good, then you get fast. Then grouchiness sets in.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)