Hello, I have a 1994 Camaro with the 3.4 v6 with 84000 miles I just replaced the intake gasket and now it seems some valves are sticking. cold compression before was 180 now #2 and # 3 cylinders are low if I loosen up the rockers and turn the engine the commpression closes the valves and i get pressure so it looks like the valves may be sticking or the adjustment procedure in the haynes manual is wrong. any sugesstions?