1917 tripod parts wanted

I am getting ready to pour some more brass and before I did I was wondering if anybody had any extra 1917 or a1 tripdod heads -the big casting the legs hook on to-so I don't have to go to the trouble to make another pattern. If you got one for sale or even rent for a month please let me know. I am really wanting one that was a 1917 converted to an a1 so I can convert it back. Thanks Guys, Hotch