Re: Accuracy casting
Going with a leader with at least 3 different sections or knotless tapered will really help. 4' of butt, 18" of mid-thickness, and 3' of tippet does pretty well. 20#, 12-15#, and 6-8# is a pretty good set up for a 5wt on warmwater.
If that still doesn't help, you might get away from the TT line. Its basically an extremely long front taper, which equals a very delicate turnover. I know there's lots of folks that swear by them, but there's more of us that swear AT them.