There are a lot of low time guys at regionals with a false sense of hope for an interview. You need to check every regular box and check one or two hard to get boxes to have a shot. The low time guys getting calls aren't your normal run of the mill regional guys. They are the interns, union volunteers, or are just over achievers in general.
Get the degree, network your ass off, forget the "you max out points at X letters of rec" and just keep adding to the pile with people inside/outside the organization, and the hardest part is showing that you really, truly want the job. A sloppy app, not doing interview prep (helps with job fairs), and not going above and beyond the average guy are all the kiss of death. It is a marathon and no quick fix will get the job.
Your service is great but you have holes in your app. Network while you fix them and as soon as you are competitive you should get the call.