TThanks everyone for replying!
I was reading through the comments,
Tomoro ill check the resistence once again after I touch the ends together.
On the used sub, I get coil rub when I barely press down dead center...
But once I press really hard I won't get it till it cone back to the "rest" point.
On the new sub, I don't get rub if I press down dead center, but if I move slightly off the center, I mean just a fraction, I get rub.
I accidentally broke the dustcap of the old red dc sub while pushing down in the center.