BJ,

here are the key calculations for a (simpler) 2 spin game and your stakes:

P/L Prob _ _ _ _ Product
-22 0.263696 -5.80131
+02 0.249817 +0.499635
+02 0.249817 +0.499635
+18 0.236669 +4.260044

The expectation totals -0.542001

That is worse than level stakes of -0.540540540