Information from 16 years ago, run a forum search with the name Chitty and you will see a lot of information on the subject:
https://www.jehovahs-witness.com/topic/5466/greenlees-chitty-some-sources
With regards to R. Franz, there is a lot that he didn't say; homosexuality is one subject and child abuse is the other. Maybe he was under some confidentially gag, others like Barbara Anderson have given testimony on this matter.