My J came off while washing on a hot day. The glue softened. I checked the other letters and they were loose too. I'm going to clean off the glue with solvent and cut a peice of 3M auto tape which is probably stronger than the adhesive JLR used. I take it in in two weeks and I will see what they will say.

 

Fixed and much stronger than the original. There was very little adhesive on the bottom narrow portion of the J but now all parts have the same thickness of 3M tape. The other letters are better now that the metal has cooled down. I eventually will retape them all.