Up close the section looks slightly difrent as if two difrent contractors with difren't philosophies built sections to the same specifications.
Dianes work looks somewhat more detailed because she Used Several more large custom textures.
If Diane ever gets around to selling her "medieval City Assembly Kit," the patch can be replaced with orignal material. But if not i woud like to replace the entire section between the towers because my work woud look beter not imeadiatly adjacent to Diane's, in which case i coud change the design slightly so not be so primy and topheavy looking.
In adition i woud like the RA to autheroise the replacment of one of the towers the curent ones are 6 prims each but don't alow entry or ackses to the covered walkways of the wall new ones that do and have a low prim spiral stairs woud run 10 - 15 prims.
The curent patch has ben stable for about a week so i don't expect it to go flying of into the eather. As to why Diane had a problem it coud have been because of it being on the edge of the world, or it coud have been a bad prim that she keept cloning. When i was trying to work on the patch while it was hanging out over the edge i enccountered all sorts of bugs including 2 or 3 bad prims (2 confirmed and one suspected, i cant link 2 pieces).
These bad prims acount for half of the cases of bad prims in my time on SL. In 3 cases the bad prims wouden't link properly. The other case of a prim not linking involved a boat hull corupted by the malfic influnce of cavorite and in the case the wood prim floor it may have been eaten out by termites causing it to act phantom So it is posible that a prim coud have gone bad in a way that caused it and others cloned from it to be unstable.