Hi I need to mix some Epoxy. I'm using System 3. I've mixed it before just by using one squirt for each pump on the bottles and it worked well. This was with the old pumps. With my last order I got new pumps and according to System 3 one full push should give one ounce but they say measure. So when I measure should I be using fluid ounces? I'll be weighing on a very accurate scale. Thanks, Jim