Ceramic Tile Grouting ?

Hi,
Have a few ceramic tiles, at the end of the run, that are a bit loose due to the grout between them, and presumably the adhesive underneath), missing, or just getting real old.
As the these tiles are at the end, there is a metal captivating edge band, which kind of prohibits me from easily removing these tiles to (also) put some kind of adhesive underneath them, unfortunately.
So, I guess about all I can do at this time is to just replace some of the old grout that has totally disappeared between the tiles.
Confused over what I should use.
Would really like something with strong adhesive qualities.
My first thought was Pheno-Seal, but I am re-thinking this as it is, of course, only semi-hard once it sets up, and not totally rigid. But it sure does grip well. What do you think ?
Saw these two products in the hardware store:
Henry Patch & Go Multi Purpose Repair Patch
Savogran Tilke Patch. **They say on the container that it can also be used as a cement.
Any thoughts on these two ?
Any suggestions on products, etc., would be most appreciated.
Thanks, Bob
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Robert11 wrote:

If the tiles are loose, putting whatever in the seams won't make them right. If you want to try, check on an epoxy grout.
--

dadiOH
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