I found some weird interactions when flying a spacecraft between kelar III and IV. Because the SOI of Kelar IV is > 32Mkm, it is possible for a spacecraft to enter orbit of Kelar IV when trying to get to Lyrne. Also, I think if KSP has the barycenter feature for mutiple object system, it will be much better and more realistic for KSS and other planet/star packs. (sorry for bad English)