I'm a few years late to this post, but I'll throw my 2 cents in because this is important.
I don't know what this break looked like but you said one leg was an 1 1/2 inches. That emphasis on one leg implies it was longer than the others and qualifies as an extended leg.
Most star breaks crack out because the extended legs were not drilled and tapped. Sometimes you will have to drill and tap many of the legs, if they are extended, to ensure a quality repair. It's time consuming and doesn't give you the end appearance you want, but sometimes its necessary to prevent you causing a replacement.