The gain that can be obtained in Zen by using RA indices is not significant in shoe games. In 6D, S17, DOA, DAS, SPA1, SPL3, NS, 4.5/6 using EM indices [R22 + 10vT (+6)], spread 1:16,
the SCORE obtained is 27.35. If instead of EM indices, RA indices were used, the SCORE would be 27.59. As you can see, it's not very significant.
Now, if I only use the EM indices R22 but change the 10vT to +11, then the gain in SCORE would be 27.52.
If I directly remove 10vT (+6) from my repertoire, I would achieve a better SCORE (27.47) than by using it (27.35).
By the way, my EM index for 10vT is +6 instead of +7. The difference is due to the estimation of the remaining decks.
Hope this helps.
Sincerely,
Cac
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