I have a dataset of 587 with 67 items. I try to conduct CFA with 15 factors. RMSEA is approximately .05, Chi Square/df ratio, is lower than 3. But fit indices are quite low like .70, .60. Factor loadings are all good and all of their t values are significant. The picture does not change so much when I test the 15 + 1 (overarching factor) model. I use SIMPLIS syntax with LISREL, with no special modification (such as covariance etc). I would be glad if anyone can help me interpret this situation. Answeres and references to relevant materials are very much appreciated.