Fed Up With Inaccurate WEights

I've spent the past few hours trying to track down what makes a scale more accurate -- especially given that I can now supremely manipulate my scale and it is bugging me. Perhaps the easiest solution is for me to go to a store and see if I can manipulate the scale weights.

Here's a decent site talking about the (true) urban mything that one "weighs less" on carpeting rather than a hard surface.

Here's a VERY thorough report on the urban myth (not a myth -- scientificially studied and recognized).