Problem #1: All models made pre-12/18/07.
Harness can disconnect from harness connector (splitter plate) as child is taken in/out of seat. In crash, unsecured child can be injured.
Call: 800-873-2276 for rubber caps to close gap allowing harness to disconnect. 
Problem #2: all models made pre-9/17/07.
Forward-facing shoulder belt guide (previously called lock-off) may not prevent some older style (ELR) seat belts from loosening.
Call: 800-873-2276 for locking clip in this consumer advisory campaign.