I now understand why standard (non ace-reckoned) hi lo insurance indices differ between SD (+1.4), DD (+2.4? -- forgive me if this is off, I am out of town, sans references), and multideck (+3). The SD and DD indices are influenced by composition dependant considerations.

These CD considerations are not a factor when hi lo with an ace side count is properly employed, however. Thus the insurance index with this count is +3 uniformly, regardless of number of decks, if one uses the ace excess/deficit adjustment method.

Also, as Cac has shown, +2 is the appropriate RC adjustment for excess aces dealt in this (hi lo with ace side) count. And, conversely, -2 is the appropriate RC adjustment for each excess ace undealt.

Thus, on this issue, we find there is ultimately no difference between right and Wong after all.