Suspension & Brakes - Painted calipers, reinstalled them and now they leak

I took my calipers off and painted them. I put them on last night and the rear calipers leak all the fluid out. I have the brak line tightened on them as tight as it can get. What did I mess up to cause this and what can I do to fix it? Thanks

You might need new copper crush washers.Go to auto zone they have them.

You might need new copper crush washers.Go to auto zone they have them.

I agree, same thing happened to me on my front calipers, may have overtightened the bolt on the brake line