If you just technically adhere to the law, sometimes that's enough, sometimes it's not; it's really hard to predict. There is definitely a possibility that the Chinese authorities won't find it sufficient.
I think a firm grip helps you control the club and prevents it from turning in your hands. Another thing about feel is, if you make a change in your grip, it takes time for your brain to adapt.
If you don't have a refinery operating, it's hard to use oil that's available.
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