Backspace on Huntsman doesn't go in all the way

Hi, I swapped the ABS keycaps that the normal huntsman comes with with Razer's PBT ones and now no matter what I try the backspace key doesn't got all the way in. I tried with both the new stabs and the old ones on the ABS keycaps but it's still the same.
I also tried to just put the ABS keycap back and still doesn't go in all the way, just barely that if I press it, it will either not work or get stuck