Note that this will probably take some time as I need to reinstall and update the game, find out what things EA changed, maybe adjust the necessary modding tools and finally adjust the sliders to the new behavior (if possible).
You may continue to use them if you can live with this, but otherwise please wait until I provide an update. While they still can be installed and used, there may be some unusual deformations on your sims.
It seems the Pets patch changed the way the sliders work in game somehow.