There are grounds under the cowling that could cause a no spark condition. If one had some corrosion under it or was loose then you bumped it while oiling the bendix that could be it.

I would just let her bump. I've learned that if you mess with something enough you'll eventually find something wrong and then it will bug you. LOL

I also put a light grease on my bendix every so often to keep it moving freely and free of corrosion.

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Doc Holiday; "I'm your Huckleberry" "You ain't no Daisy"