If you were distilling over 5 drops a second, you were running your distillation to hot and fast. Just react the impure safrole collection you have, as it should be good enough for the time being, and try to get cleaner fractions in you subsequent distillations of Isosafrole/ketone.
If at first you don't succeed, try, try again. Then give up. There's no use being a fool about it.