2005 grand caravan headlight adjustment screws

Had to replace a bulb on the left side and after reassembly the headlight aims low. Other sites explain that there are either 1 or 2 adjustment screws that are accessable from the engine compartment. One site said that on some Caravans the screws are internal. My car does not have visible adjustment screws. By internal I presume that the headlight assembly must be removed and then adjust the screws. Before I re-remove the headlight I wanted to ask just where these screws are--on the assembly itself or on the frame they mount to. Is it a process of remove, adjust and reassemble, check the alignment and do over if the adjustment is not correct? Thanks

I'd double check that you reinstalled the assembly correctly. Changing the bulb should not effect aim in any way.