diff --git a/downloads-generation/data_evaluation/GENERATE.sh b/downloads-generation/data_evaluation/GENERATE.sh
index 1e0ec683a6dfbcda0ce3b7925db0fc348d14d462..8a562dc4c123784f0f3473358871e39b1ee7e5d9 100755
--- a/downloads-generation/data_evaluation/GENERATE.sh
+++ b/downloads-generation/data_evaluation/GENERATE.sh
@@ -143,7 +143,7 @@ do
         echo bzip2 -f "$(pwd)/benchmark.multiallelic.production.$kind.csv" >> commands/multiallelic.production.$kind.sh
     fi
 
-    for variant in no_additional_ms compact_peptide affinity_only no_pretrain single_hidden_no_pretrain
+    for variant in no_additional_ms compact_peptide affinity_only no_pretrain single_hidden_no_pretrain 500nm
     do
         if [ "$2" == "continue-incomplete" ] && [ -f "benchmark.multiallelic.${variant}.$kind.csv.bz2" ]
         then
diff --git a/mhcflurry/class1_presentation_predictor.py b/mhcflurry/class1_presentation_predictor.py
index ef3f5e485fa3d830afa46381cbe2bb1be531f721..30e535bfbf64c614de6c0659f556010d0351d04f 100644
--- a/mhcflurry/class1_presentation_predictor.py
+++ b/mhcflurry/class1_presentation_predictor.py
@@ -252,6 +252,22 @@ class Class1PresentationPredictor(object):
             n_flanks=None,
             c_flanks=None,
             verbose=1):
+        """
+        Predict presentation scores across a set of peptides.
+
+        Parameters
+        ----------
+        peptides : list of string, or EncodableSequences
+        alleles : list of string or string -> string dict
+        experiment_names :
+        n_flanks
+        c_flanks
+        verbose
+
+        Returns
+        -------
+
+        """
         return self.predict_to_dataframe(
             peptides=peptides,
             alleles=alleles,
@@ -273,7 +289,7 @@ class Class1PresentationPredictor(object):
             verbose=1,
             throw=True):
         """
-        Predict across protein sequences.
+        Predict presentation across protein sequences.
 
         Parameters
         ----------
@@ -439,6 +455,23 @@ class Class1PresentationPredictor(object):
             include_affinity_percentile=False,
             verbose=1,
             throw=True):
+        """
+
+        Parameters
+        ----------
+        peptides
+        alleles
+        experiment_names
+        n_flanks
+        c_flanks
+        include_affinity_percentile
+        verbose
+        throw
+
+        Returns
+        -------
+
+        """
 
         if isinstance(peptides, string_types):
             raise TypeError("peptides must be a list not a string")
diff --git a/mhcflurry/downloads.yml b/mhcflurry/downloads.yml
index 7a1fb56c800e9d7de4feb0fdd5961a1ce9dd765d..4ec26a95bebaadd983234dbd38a8822fd6700d41 100644
--- a/mhcflurry/downloads.yml
+++ b/mhcflurry/downloads.yml
@@ -37,7 +37,7 @@ releases:
               default: false
 
             - name: models_class1_pan_variants
-              url: https://github.com/openvax/mhcflurry/releases/download/1.6.0/models_class1_pan_variants.selected.20200109.tar.bz2
+              url: https://github.com/openvax/mhcflurry/releases/download/1.6.0/models_class1_pan_variants.selected.20200307.tar.bz2
               default: false
 
             - name: models_class1_processing_variants