Using the Event Editor to make MIDI adjustments to selected notes [Logic Pro Live Looping Tutorial]
When having to make small (or large) edits to MIDI notes, making use of Locic Pro's "Event List" is one way of doing so. Vertically dragging the values with your mouse adjusts the values. On the fly transposition, for example, combines speed and accuracy when doing it like this (IMHO).
It may or may not fit your workflow, but it definitely won't if you're unaware of this feature.