Alright. I own an Alvarez RB30C Acoustic/ Electric bass and I went to purchase some new string for it today and the guitar shop only one set of Acoustic bass strings (Martin SP). I brought them home and started to change them out only to find that the Martins were too short for the neck. I bought the guitar from a friend of a friend and thus have no idea what style strings were on it originally. Any advice on which set of strings will work on this guitar? Thanks.