For autocatalyst 12 with R=CH3, stochastic formation of tetrameric species was predicted, providing the same mathematical description as was found for dimers as catalysts. For bulkier substrates, observation of an increase in the extent of asymmetric amplification beyond that predicted in Figure suggests that equal partitioning of enantiomers between monomeric and higher order species may no longer hold in these cases. Figure compares the stochastic model prediction for ee with that found experimentally by Gehring using pyrimidyl catalyst 14 containing the bulky adamantyl group. Amplification is stronger than predicted by the dimer model up to 100 turnovers, after which a decrease in ee is attributed to product decomposition.