Maybe you want to consider a different method. I have done gummies on a small scale 2 times. The first time I used jello, water and gelatin to get an opaque, super sticky, hard to chew, weak on flavour gummy.
The second time however I found a bit better. I used a recipe that involved heating sugar, water (or fruit juice), corn syrup, flavouring, and adding in the gelatin water mix. The gummies came out clear, still very sticky, but much easier to eat and more flavourful. The stickiness was easy to fix, I simply rolled the whole slab of gummy in sugar, cut into pieces and rolled them again.
Also, try lining the mold with saran wrap.
Hope you still get another chance to try.
Zzyxk - Short baked goods slideshow! Homemade
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