hey what is making those marks in the mounting surface between the lug holes ? some thing is not right about the mounting surface whats making those . if thats the lug studs from the adapters need to be cut down .
x2, That's probably what was contributing to them loosening up. They were tightened against something incorrectly, the back of the wheel wore a little causing it to loosen up on you. Fix whatever the wheel is rubbing on, that's an obvious one.
