Jonathan-
Thanks for the really quick answer.
I purchased the Grout at the Menards in Red Wing, MN. The sticker says "705-4857 12KDMXCGV exp.12/11/2009".
I spent a relatively long time mixing the grout with a trowel to create a consistent mix, and I tried to pack it as tight as possible, especially after going over the same areas 3 or 4 times. But this is my first time grouting anything so an installation error is certainly possible.
In looking closer at the pattern of the holes, it does look like they only occur where there were gaps between the interlocking tabs.
It's good to hear that "re-grouting" over the saging areas should work. It's a small room, so it should not take more than an hour. I'll wait until Tuesday night to do it and we'll see what happens.
Thanks again for the quick response.
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