here are some tips on how to adjust an American Standard dual flush valve.

NOTE: ‪@garycossar3577‬ notice when I placed the valve back on, I installed it incorrectly. The blue (low flush) needs to be on the left side.

I purchased the part from https://amzn.to/45hYZIt

American Standard 7381091-400.0070A Dual Flush Valve, Toilet Repair Part, Plastic