Sidemarker NOT going back in

Ok so I replaced the sidemarker with a smoked unit. When trying to reassemble it, I can feel the bottom hooks and loops engaging, but the tab on the top wont go all the way in.
I thought it might be aftermarket ****ty fitment...but the stock unit is running into the same block. It almost feels like there's too much in-between the two halves.
Reallly could use some help as I work when the service dept is open. This "10min" job has turned into days.
Once I get this sorted out ill post pics of my whip. So far I've gotten 35% tints, laminx heads and fogs, tinted middle strip on tails, and blacked out fog housing.
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Thanks for the help! Also picked up some Euroteck lowering springs today (I think they're re-tuned Eibachs..anyone know?). Can't wait to put those on.



