Originally Posted by: Mukhow to pick fret 14th on 5th string and then go hit fret 14th also on 4th string smooth and clean?is that all using just first finger? or pick on the 5th string using first then on 4th string use the middle finger?

Mmmmm, if i understand what you mean, you want to pick 14th on 5th string (B on the A string) then pick the 14th on 4th string (E on the D string) ?
Well, there is only one way to do it cleanly, as you said, it's only with the 1st finger, or another finger, it depends of wich context this two notes are include.
But you'll have to use only one fingers anyway.

Pick the 5th string using you first finger and then slightly break the articulation of the 1st phalange of your finger like a road roller. You have to make your finger roll, on this two strings. But don't change the position of your left hand, the movement must only coming from the phalange. :)