Troubles with insects in clear resin

I am salvaging dead dragonflies from a swimming pool and attempting to preserve them in clear resin (it goes by the name Pour-On.) I have used this resin before to coat woodburnings on pine, and it dried rock-hard.

Now, it is Not drying hard for this project. It remains tacky even after five days. I am wondering if maybe the insect bodies retained moisture and released it into the resin as it dried? I am now starting to soak the insects in rubbing alcohol before drying out and preserving. The ones before, I was merely netting out of the pool (chlorinated; maybe that has something to do with it?) and air-drying for a few days and then pouring over.

One solution at least, for the ones that are still tacky, is to spray Krylon over. It dries hard but then again, I am just sealing the moisture in it seems, and I fear for the longterm permanence of this. Any ideas? Maybe the alcohol-soaked ones will work better (maybe it is the chlorine from the pool water messing with it?) I am definitely using a good 1-to-1 ratio of the 2 parts and mixing just as well as I did when I was just using the Pour-On for the wood pieces.

 

Awesome; thanks! The layers are relatively thick (1/2 inch) and this could explain. I'll get some of that.