Clippers not clipping

I have bought an Oster A5 Recently and love them however I made an error that's driving me crazy...

I didn't read how to change the blades properly and took the screws out instead... I have since put them together but the fur is getting stuck in the plate piece. I also lubed them when I reassembled them, but maybe too much? I just know it's getting stuck as I try to run them through the fur (scraps).

Any advice, tips, or tutorials woud be appreciated!