Setting up a Shimano road triple integrated shifter is a bit tricky. I have messed mine up both times I replaced cables and housings. It took a lot of re-reading the PDF files from Shimano before the subtleties in the instructions were fully understood. The trim stops are really handy to have on a indexed road triple. My Dura Ace 7703 3x9 geartrain is really awesome. I use 12-23 9-speed cassettes with my 52/39/30 Dura Ace 7803 triple crank and is a little bit more finicky than my Dura Ace 7800 2x10 bike, but not much more finicky.
I have noticed that that overuse of the middle 39 tooth ring leads to premature wear of this one chainring. Replacement triple chainrings for road triples appear to have become rare now. I’m about to experiment with a Specialities TA 130bcd 39 tooth triplizer on a standard double 130bcd crank in order to try something unique - I have no idea if it will index a Shimano s.i.s. triple as successfully as the pinned and ramped originals did however.