Move always_miss check up front to get it over with.
Revert "Fix a bug discovered by inspection:"

13:19 < phk> you're right, that's bass ackwards

This reverts commit 4c47a36e9f8b7b2dfe7eff60c3fda418dc6effca.
Pick the youngest grace/IMS candidate object.

Save a couple of needless oc_getobj() calls.