Balled up pieces of "lead" is the bearings.
If the bearings are goners, most likely the e-shaft would try to punch through the front or the rear of the engine.
When it tries to do this, it tends to mangle everything under the front oil cover.
In extreme cases, the stat gears and / or gears on the rotors get stripped and the metal (shards) ends up in the oil pan...amazingly.
-Ted
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