This makes no sense to me

Sorry it took so long. I just saw this a bit ago. I snapped a few pictures that may help, but getting the angle I wanted to show where things were kept putting the stuff of interest in the shadow of the flash. I can locate a better light source or take pictures during the day if needed. Here are the least crappy of what I took...
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Let me know if a different angle would pin down the problem spot in a more helpful way. I've mangled my share of dipstick tubes trying to get them to play nice with accessories.

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