My new scale did that to me too, I was so disappointed to start using the new scale weights, but I do feel they are more accurate. I didn't change weights to adjust them to new scale measurements, but I made a note in my journals that I did make the change. I did keep the old scale though because my husband still likes it (it switched from lbs to kg to st and you couldn't switch it back). The nice thing about both scales is I use the old one to weigh at night to predict what I will be in the AM... and then I actually log electronically through the new one in the am. You are doing great, keep working at it!