is there a limit to how tall a Vav or Zayin can be?
Some of the Vavs, while the same length as the other standard letters, are almost hard to accept as Vavs. Is there any point where we'd draw the line? It's not as if the sofer had no choice. He could have made the letters end at the halfway point between the sirtut rather than fill most of the space. (This also caused him to make a shortish neck on a Lamed and create a shaila on one of the Dalets.