You have three options
1. Shoot full choke, try the spreader loads and see how they pattern. They were designed for tight choked guns and they work a bit for me, they will not turn the trap gun into skeet gun.
2. Send barrel off for thinwall choke tubes. I bought 26" barrel with Briley thinwalls already installed, they work nice but I don't like the short barrel for everything so I switch between the long & short barrel. I got the 26" cheaper than I could get 26" IC barrel.
3. Buy the 28" mod barrel, it's the sweet spot for sporting clays. If you have time and no $ burning a hole in your pocket maybe a deal will pop up ?
Enjoy your Super 1, I have 3 of them now