The Mira engineer claims that because the valve is not exactly horizontal (it looks okay to me) it is sure to leak and refused to fix it. I'll get the plumber who fitted it but I can't believe the bubble has to be absolutely spot on.
Having sold and fitted Mira showers for some years now, this is a new one on me!
I could understand probably that if the pipe was crooked where it comes out the wall, the seal rings may not mate up precisely and therefore leak, but if the shower is on and dry now, I can't see why it should leak later.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!