Is aamc sample test more representive?

Hi, My mcat is in about a week and I just took my aamc sample test and I got a 508.7 (after I converted the score). Im really happy since im aiming for a 508+. However, in the last 2 weeks I took next step fl 3 and 4 and got a 503 on both of them. Is the sample test much easier and i should instead expect to get a lower score or is next step alot harder? TIA!
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: MCAT: Medical College Admissions Test Source Type: forums