i have a 1985 bmw and i have recently replaced the cap rotor and plugs and wires. the car seems to run better however it is still pretty jerky when i accelerate at low rpms. now if i floor the damn thing it accelerates fine.......any ideas? also my glove box doesnt open? any ideas on how i can get it open? and last but not least.....anyone have any idea what the button right below the lighter is ?