| It's pretty much impossible for a needle roller cage to come apart without you knowing about it at the time. Has the engine been worked on before and was it left from previous work?
I think the small end has needle rollers as well.
If I was in the same boat I would have to pull it apart as well just for piece of mind.
Not much help but good luck and if you're like me once you get amongst it, it gets quite enjoyable. | 
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