Here nearly no one cares for their engine anymore. Good thing that manufactures have greatly improve the cleaning of the parts. This was and is one of the reasons for the initial break-in oil change as removed left manufacture residues. Plus as Norm said tolerances has greatly improve along the materials used.
Now the stuff from China not so much as some just plain junk. The old saying here still rang true. "You get what you pay for" meaning if you go to too cheap the manufacture has to be using substandard materials that will not last as long. It sorta all Chinese clone Zama carburetors out there. Most are just junk. Now there are handful good ones out but with my luck all three that I had brought were defective.
But every consumer still seems to fall for the low prices and then only complains later when got to replace what they brought. Guess what they just go out do it again. Never learn from their mistakes. But like is what made businesses like Walmart so large and profitable.
