I'm trying this out for the first time and followed the instructions and it all is working. However I too have run into this issue where no matter what I set the H-setting level to, lust always decreases over time, and nothing I do seems able to keep it from dropping.Maybe double check the H setting and that you have the . I had it a while ago and others were posting about it, but checking lust now to make sure with a few days of just Sylvie petting it didn't decrease or disappear.