Adapter help please

Be fore warned... These type wheel adapters gained a bad reputation long ago.
Root of the problem was and still is improper install. All too often the adapter would sit on top of a balancing weight welded on 9 and 10 inch brake drums. The install instructions plainly state "The adapter must sit flat against the mounting surface".
This means you will likely need to whittle a small notch in the adapter.
Use a torque wrench to mount them, recheck that torque once in a while, you shouldn't have a problem or become one who ads to that negative reputation.