git.diff

diff --git a/shared/find_each_model.js b/shared/find_each_model.js
index fb575db..bb671c8 100644
--- a/shared/find_each_model.js
+++ b/shared/find_each_model.js
@@ -1,10 +1,12 @@
 var Bluebird = require('bluebird');
 
-module.exports = function findEach(Model, fn, since, success) {
-  since = (since == null) ? 0 : since;
+module.exports = function findEach(Model, fn, lastId, success) {
   success = (success == null) ? true : success;
   return Model.query(function(q) {
-    return q.where('id', '>', since).orderBy('id', 'asc').limit(100);
+    if (lastId) {
+      q.where('id', '<', lastId);
+    }
+    q.orderBy('id', 'asc').limit(100);
   }).fetchAll().then(function(models) {
     if (models.length > 0) {
       return models.reduce(function(p, m) {