laravel - PHP Elasticsearch returning 0.0 for all scores -

i have aws elasticsearch instance provisioned , seeded bunch of band names. if query via curl on command line nice set of weighted results including scores:

curl -xget 'search-mydomain-3gk2dsu32xfb5ar4kcfablqjla.us-west-2.es.amazonaws.com:80/index/bands/_search?q=burn'  {"took":13,"timed_out":false,"_shards":     {"total":5,"successful":5,"failed":0},"hits":         {"total":17,"max_score":5.6469817,"hits":             [{"_index":"index","_type":"bands","_id":"17554","_score":5.6469817,"_source":{"id":17554,"band":"burn witch burn"}},                   {"_index":"index","_type":"bands","_id":"30730","_score":4.617216,"_source":{"id":30730,"band":"burn halo"}}, 

however, when use elasticsearch/elasticsearch php package in composer.json file:

   "require": {         "elasticsearch/elasticsearch": "^2.2" 

that ignores _scores:

       "hits" => array:3 [       0 => array:5 [         "_index" => "index"         "_type" => "bands"         "_id" => "2890"         "_score" => 0.0         "_source" => array:2 [           "id" => 2890           "band" => "jack starr's burning starr"         ]       ]       1 => array:5 [         "_index" => "index"         "_type" => "bands"         "_id" => "8381"         "_score" => 0.0         "_source" => array:2 [           "id" => 8381           "band" => "d. greenfield & j.j. burnel"         ]       ] 

i can't life of me figure out how _scores reflected.

i'm trying in laravel 5.3 application using laravel/scout, query straight forward:

app\band::search('burn')->get(); 

but problem lies in elasticsearch package i'll dump results in there , see 0.0 scores.

kevin