Mine stays between the A and the L as well, with little change unless it's incredibly cold out. I was told by the dealer it was normal, and 5 years and 92k miles later, it's fine.
1999 Silver Frost SVT #609 of 2760 Born on 12/3/98
KKM Intake Removed Resonator 35% Window Tint all around Tinted Tail Lights ElKy Mesh Grilles HID
Dyno'ed at 175.3HP/155.5TQ
"How much must I live through just to get away..."