I've got the indices from -20 to +20 at home. I'll try to send them to you today. What sort of games are you playing (decks, rules, blah blah blah).
Although, you are probably better of using a different system anyway. The Hi-Opt systems require an ace side count which isn't really worth the effort in most games. Using an ace-reckoned count is easier and often more accurate. Systems like HiLo and KO are very easy and very powerful. If you want a level 2 system, Zen is very good (either balanced or unbalanced).
-Sonny-