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I would love to see a photo of what you have going on there.
You shouldn't have to remove the guide to replace filament. That's why there is that gap under the hook. You can just feed the flament into the extruder and then slip it into the guide when you are all fed and ready to print.
And the top of the guide is supposed to pull the filament down enough so that it doesn't rub on the top of the hole in the extruder lever.