Got it! Thank you everyone and especially dfariswheel for the help. Such an easy thing, but I guess if you don't know what your doing (like me), it can be a serious pain!
Now just to get the corrosion and rust out of the bore. Any suggestions on that?
I've already tried Sharp Shoot R Wipe-Out Brushless Foaming Bore Cleaning Solvent, Kroil and Ballistol. All helped improve it, but its still not looking good.
The patches were initially coming out dark blue, now they are rust colored with some black in them.