I would like to participate in these technical discussions, but it would be incomprehensible to you given my ignorance of the English language.
I'll just say one thing, the crankshaft is the heart of the engine, if a defect goes away in that point, you'll see the big end that keeps company with the front wheel.
The usual discourse is the main bearings of the engine, many times I have looked for analogous or similar things, but then I put my hands in my pockets and paid.
Let me know if the engine block remains whole and functional.
Sorry if I use a simultaneous translator.
ps. The worst thing is when I translate your answers.
I find it hard to understand, that's why I keep quiet.