I have a cheap scale and I just noticed that it's always stuck on .6. Every time it calculates my weight it's always 147.6, 145.6 ect ect. For example this last week I was 143.6 all last week then one day it's went down to 141.6. Now I've been stuck on 141.6 for a week. Think I need a better scale! What scale do you use?