Hi everyone !! I'm trying to create a custom connecting column by cloning the moroccan connecting column from M&G. Thing is I want my connecting columns align and fit into half a tile but I'm having two main issues(I attach a picture for better understanding)

First issue is that I cant make the end part of the connecting column fit the middle and beginning part. I suspect that this is due to the fact that the ending and beginning part is the same mesh but rotated 180º. Is there a way to only flip the column and not rotate it so everything aligns correctly?

Second issue is that the column only contains a lod90 and shadow texture in the package. I've tried to change this lod90 file for a new texture, but it didn't work and the columns still show the old texture.

Any advice in how can I fix this issue?