LOL lurker, sorry didn't read whole post. This might work too
Code:
EVENT_ITEM {
if( if( $itemcount(1001) == 1 || $itemcount(1002) == 1)) && if( $itemcount(1003) == 1 || $itemcount(1004) == 1)) && if( $itemcount(1005) == 1 || $itemcount(1006) == 1)) && if( $itemcount(1007) == 1 || $itemcount(1008) == 1)) )