New master cylinder wont work??

I was having gremlin in my master cylinder. I placed it on the bench and operated it manually until I could get it flowing properly. I used a can of brake cleaner and put the tube into the ports and used that to clean out the gunk.

I ended up having to replace everything between the master cylinder and the wheel cylinders. It was scary how tight I had to make every connection so the tubes would "crush" to make a good seal.