Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not as big as "Big Guy", but I've experienced similar problems.

This thing is bathroom furniture. If you have trouble keeping a door open, this scale might be really useful.It's nearly impossible to zero this scale. Turning the zero knob does nothing for several turns, then - WHAM! - it jumps 5 pounds. When I weigh myself multiple times, my "weight" can vary as much as 10 pounds. I'm about 180, so that's 5.5%.Well, at least I'll have something for my next yard sale.