I'm currently having a few problems with creating a prop-part in clear-cast resin. All the test casts I have done have ended up with tackiness problems. I'm presuming this is due to the ratio of resin to catalyst. Is this an exact science? Was I wrong to presume that the more catalyst added, the faster the cure-time (as I've found in many other resins)? Anyone have experience with clear-cast resin that could give me any tips?