Water pump won't fit now.

[37 Coupe]

If it isn't one thing it is another.I go back to working on the engine ,take the water pump out I bought new and it will not go in the manifold,hung up somewhere where it cannot go all the way in One I took off was fine as far as fit,thought I was improving by buying a leakless pump. I cannot get through to Bratton's by phone and I doubt they will help it has been over a year and it is marked Bratton's but came from Mac's and they will not help.I swear I am going to get this running and stick with my '37.