I had a small frag plug with some zoas that were stuck on it from a previous piece I purchased. I figured I could simply remove the zoas from the frag plug and glue them on a piece of rubble rock I had (just for better looks).. Now after a week 2 of the maybe 15 heads i glued on will open.... Does it take this long usually? Is there something I should do? I was real careful removing them from the plug and I dont think I damaged any of them. But by them not opening makes me think I did.

