Vic I can't find the thread where we had talked about cuts that looked out of place in many windows of times gone by.
In my research of John LaFarge, I found several windows like those I had questioned. The attachment is one such window. Is this an example of what you were talking about in repair work? I don't know if it is a LaFarge or not because it starts off with him and then it appears that as the pictures continue, the techniques changes greatly.
http://stainedglassphotography.com/MixedAlbum/slides/Disciples%20detail%201%20from%20Last%20Supper.htmlYes that is and English window made by Wm. Morris. It has "random" lead lines. While it may not look good o some people, it DOES make a strong window