I have been getting complaints about the weld symbol in Revit being to long when we aren't showing all the information. So I took that weld symbol that had been developed by and another user (which I think know is the one that ships with Revit), and made some modifications to it, so that when we don't show weld lengths or stitch welds the length of the weld symbol gets smaller. I did this by added a new yes/no parameter that controls if you want to see the weld length. I also had to nest the tail label into the weld symbol family. I thought I would post it here is case anyone else wanted to use it.
I made it a different name so you could distingue between the new and old. If you really wanted to get into it you can specify your own lengths. Also let me know if you have any suggestions to improve it.