BioE Score Drop & Score Choice?

I got a 740 on the Bio E subject test in October, and I retook it again a few weeks ago. I got scores back today, and my score dropped 10 points, resulting in 730. How poorly will it reflect on the admissions officers that my score dropped the second time I took it? Also, if the school does NOT participate in score choice, will I have to send BOTH my Bio E subject tests? Or just the highest one?

Thanks!

Bump. I’m mainly focused on Stanford and Cornell.