craftgrrl | Any resin casters out there?

I've been working with Castin Craft clear resin and have learned lots through trial and error. There is some info in the memories, but not quite answering all my questions. I've been playing with the rations of resin to catalyst, and drying times, and yet my finished products still have a tacky feel. Any ideas what I can do, or what I've been doing wrong? I was thinking of using my dremel and cotton polishing wheel to buff it out a bit, and see if that helps. I also see the aerosol "finishing spray" online. Anyone use that? Think it may help?
As soon as I get all the kinks out I'll make a more exciting post.