You usually have problems with the upper knife, getting it right. The lower one is shown in your manual more than likely. You may have to take it in if you can't get to line up. Do you have any retired machinist or someone handy with gadgets in your neighborhood? But, you can try this, I just took out my Singer serger, and put 2 credit cards on top of one another and that is the spacing of the knives on mine. The lower knife is flush with the needle plate. I hope that is works because I don't know of a video for it. If you email me, I have a decent diagram of what it should look like, I can scan it for you, [email protected]
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