It still sounds like they didn't get it sealed right to me, and if it rains, you may not detect the leak right away but it sure will start to smell.
2008 G8 GT PBM, DOD Delete, Pat G Spec'd Cam, 7.4 Hardened Pushrods, Comp Trunion Kit, PAC 1518 Springs, ARH 1 7/8" LT Headers Catted Exhaust, Spectre CAI, Pat G Tune.
412.198hp/396.828tq at the Wheels - Mustang Dyno
1/4 Mile, Very First Run, Stock: 13.66 @ 102.74 w/ a 2.067 60'
1/4 modified 12.49 @ 114
2008 G8 GT MGM, Leather w/ Red Inserts, Sun Roof, 18" Bremmer Wheels
1/4 mile 14.0278 @ 101.49 w/ a 2.2658 60'
DA 2260, Best Run for Lynda