Re: is this normal?
They don't balance engines in China. They bolt them up from parts.
Parts is parts. Sometimes they fit better than other times. Sometimes they don't.
Sometimes the rings just snap in half. You have seen the factory, it's 10 people standing around a bench slappin' 'em together. Anybody see anyone micing journals?
The only thing in my garage with 4 wheels is the lawnmower