2004 f150 heritage
5 speed
trouble using 4 high
its a hard shift into 4low neutral and 2 high but does not engage into 4high
is it an easy or difficult/expensive fix

 

Welcome to the board.

I am not sure how difficult it is to fix your problem, I think 4 low is supposed to be harder to shift than 4 high. Try posting your problem here: https://www.f150forum.com/f4/

You will probably get more/better responses in that section of the forum.

Good luck!