Two part question
1) what is that blue rubber plug looking thing in the main of the block?
Looks like a plug because it actually pops up the back of the main kinda out the side/top. Really just looks like a plug. What's the purpose for it?
2) my bearings cover a bit of the orafice on the block main. I know the top hole is smaller, I'm talking about the second, big hole. It doesn't sit square on the hole. It's offset a little. Is that normal?
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