As a matter of fact i was playing with the wall last September, I installed the UU patch then replaced the new uruexplorer.exe with the backup i made before I installed the patch... Then all it took was a simple SDL switch filp and boom, the whole thing worked... suits, music, sfx, the manual, control pannels, even the maintainers nexus...
so its not the executable that has the issue with the wall, its something else... (BTW i used the ABM version of the UU patch on an ABM install with neither of the 2 expansions installed)
Anyways, I think that the problem is that you guys have been using POTS as your base client, and I know for a fact that cyan deliberately hacked out the wall segments in that version... so you need to revert back to the files from ABM and install the changes from the UU patch to make that wall work
So the wall will work, the problem is weather or not you can make the necessary changes through drizzle