Tiling onto uneven wall

[Unregistered]

I am tiling my bathroom and all tiles have fitted flush to the wall. The last four which run along the rim of the bath are uneven so the tiles will not fix onto the wall (they rock when you push either end). They sit further back than the rest of the tiles aswell when you line them up. What is the best thing to use to even up the wall and is that the best thing to do? Thanks

 

[GazTech]

I am tiling my bathroom and all tiles have fitted flush to the wall. The last four which run along the rim of the bath are uneven so the tiles will not fix onto the wall (they rock when you push either end). They sit further back than the rest of the tiles aswell when you line them up. What is the best thing to use to even up the wall and is that the best thing to do? Thanks

Mix up some rapid set adhesive and build the tiles out flush,with the rest....if its the other way...then chisel off the plaster to gain extra depth....Gaz