My first group was 1.2 that i got from someone local...and after about three months i also saw nothing...so i went ahead and replaced the whole group about a month ago with 2 groups of 1.3...and last week i got my first three litters...so since nothings changed, but the rats themselves...i dont think it's anything i'm doing wrong, so my suggestion would be to try another group(while maintaining ur current group) and if it's successful then make a decision about your original group.

best of luck to you..although none of my babies are big enough to feed off yet i can tell that this is going to save so much money...and it's so cool/exciting too!!