??? do you mean the pre-chamber is pointed, the part he was talking about grinding down?
The injector itself is blunt on the end. Here is my photo that corresponds to that Hoye diagram.
Mine had points on them right in the center the injectors did that is.
Spray oil is your friend as I said about 270 posts ago hahaha by now they would fall out on their own or just a bit of persuasion that and get the crud out from around them with a wire and air etc just my suggestion.
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