Ok! I posted about this before, but my post was not clear enough as I'm unsure how to explain myself since I'm not a renovation expert and it's my first time fixing an apartment.

I should also add, I'm not doing this apt DIY, I have a contractor, but I'm overseas in a country where things are usually done less than par, so sometimes I need to ask others about how things should be properly done.

I have in the wall above the bathtub the two holes for the hot and cold water supplies and will tile over this and then attach the bathtub mixer to it. Problem is, the left hole is half CM higher than the right one.

But if you look at this youtube video starting at 2:53, you will see this guy is also install a mixer. https://www.youtube.com/watch?v=XuroyXJ97VY&feature=youtu.be So that's what I mean by "holes in the wall". And he has a similar mixer to mine---with those s looking little pipe connections you put it first, then the mixer on top. It seems you can move those "s" shaped pipes around to make the level lower or higher? Or would that mess with having the proper measurement between the two holes?

If the left hole is higher than the right, will this be a problem or will the plumber be able to adjust when installing the mixer to make it level? Or since I didn't finish tiling yet, should I just have them cut that taller pipe down?

I hope I make more sense this time. Having a hard time explaining what I mean and really having a hard time in the country I'm in to get them to install things correctly.

Thanks for any help!