diff --git a/.DS_Store b/.DS_Store
index feca861..4c8696c 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/src/.DS_Store b/src/.DS_Store
index bf7db11..0590414 100644
Binary files a/src/.DS_Store and b/src/.DS_Store differ
diff --git a/src/propeller/.DS_Store b/src/propeller/.DS_Store
index ed2fbb1..a193822 100644
Binary files a/src/propeller/.DS_Store and b/src/propeller/.DS_Store differ
diff --git a/src/propeller/problems/valiant.cljc b/src/propeller/problems/valiant.cljc
index d47fd86..e43d899 100644
--- a/src/propeller/problems/valiant.cljc
+++ b/src/propeller/problems/valiant.cljc
@@ -25,11 +25,12 @@
 (def instructions
   (vec (concat (for [i (range num-inputs)] (keyword (str "in" i)))
                (take num-inputs
-                     (cycle [:boolean_and
-                             :boolean_or
-                             :boolean_not
-                             :exec_if
-                             'close])))))
+                     (cycle [:boolean_xor
+                             ;:boolean_or
+                             ;:boolean_not
+                             ;:exec_if
+                             ;'close
+                             ])))))
 
 (defn error-function
   ([argmap individual]
diff --git a/src/propeller/session.cljc b/src/propeller/session.cljc
index 73bdf24..9f83bd4 100755
--- a/src/propeller/session.cljc
+++ b/src/propeller/session.cljc
@@ -156,19 +156,55 @@
 ;          :diploid                 true})
 
 
+;(gp/gp {:instructions            propeller.problems.valiant/instructions
+;        :error-function          propeller.problems.valiant/error-function
+;        :max-generations         500
+;        :population-size         50
+;        :max-initial-plushy-size 1000
+;        :step-limit              2000
+;        :parent-selection        :tournament
+;        :tournament-size         10
+;        :umad-rate               0.01
+;        :diploid-flip-rate       0.01
+;        :variation               {:umad         0.9
+;                                  :diploid-flip 0.1
+;                                  }
+;        :elitism                 false
+;        :diploid                 true})
+
+;(gp/gp {:instructions            propeller.problems.valiant/instructions
+;        :error-function          propeller.problems.valiant/error-function
+;        :max-generations         500
+;        :population-size         100
+;        :max-initial-plushy-size 1000
+;        :step-limit              2000
+;        :parent-selection        :tournament
+;        :tournament-size         10
+;        :umad-rate               0.01
+;        :diploid-flip-rate       0.01
+;        :variation               {:umad         0.9
+;                                  :diploid-flip 0.1
+;                                  }
+;        :elitism                 false
+;        :diploid                 true})
+
+;;; below is when I switched to just xor
+
 (gp/gp {:instructions            propeller.problems.valiant/instructions
         :error-function          propeller.problems.valiant/error-function
         :max-generations         500
         :population-size         500
-        :max-initial-plushy-size 1000
+        :max-initial-plushy-size 50
         :step-limit              2000
         :parent-selection        :lexicase
-        :tournament-size         5
-        :umad-rate               0.001
-        :diploid-flip-rate       0.001
+        :tournament-size         2
+        :umad-rate               0.01
+        :diploid-flip-rate       0.01
         :variation               {:umad         0.5
-                                  :diploid-flip 0.5
+                                  :crossover    0.25
+                                  :diploid-flip 0.25
                                   }
         :elitism                 false
         :diploid                 true})
 
+
diff --git a/src/propeller/variation.cljc b/src/propeller/variation.cljc
index 7c2acd3..1c01464 100755
--- a/src/propeller/variation.cljc
+++ b/src/propeller/variation.cljc
@@ -18,7 +18,7 @@
 
 (defn diploid-crossover
   "Crosses over two individuals using uniform crossover. Pads shorter one."
-  [plushy-a plushy-b argmap]
+  [plushy-a plushy-b]
   (let [plushy-a (partition 2 plushy-a)
         plushy-b (partition 2 plushy-b)
         shorter (min-key count plushy-a plushy-b)