sticky spots

If there is only 3 spots that are sticky and the rest is good, it is most likely that those 3 areas were not blended as well as the rest of the material. Good news is that a new thoroughly mixed layer will cover, help it cure and still produce a beautiful end result.

Measure and thoroughly mix equal amounts by volume of the Amazing Clear Cast and slowly pour an even layer over the entire tray. Do not try to only recover the areas that are sticky. Recoat with a thin layer over the entire tray as you mentioned.

Allow it to cure in a warm and dust free environment for approx. 18-24 hours.

Mike