Hi Laura,
In cases like this, I will sometimes notch the mold in a place that isn’t critical to the mold integrity. I will trim out a little triangle. For molds that look almost the same, I would suggest notching with a different number of triangles. I tried putting the notch in a different place, but depending on how I held the mold, it was almost as confusing. So for example, one bangle mold may have one triangle notch, another may have two triangle notches.