I had a bass which cost more than I care to even think about. The scratchplate was not cut well. I sent Brian Pillans it with a description of what was wrong. The replacement was bang on.
I think I am naturally left handed but have always used my right as my dominant hand. I most certainly do not have the right hand dexterity I see many, many others operate with ease.
Thumb position.
We play the best of instruments. We have the best notes. And yet, people want to go and imitate 'cellos being played badly by playing really high up. I just do not get it.