All the time...about what were seemed little things - organizational not doctrinal.
When they took away food service at Assemblies, and even stopped us Brits being able to buy a cup of tea. there was a lot of "negative comment" believe me...I used to criticise the illustrations in the mags, and take the mickey out of them sometimes when conducting the book study, I used to grumble about the use of English in the Lit. , and say that I would listen to my music no matter what they said ....
It was only once I had made up my mind to leave that I openly voiced differences to the doctrines..The elders still were reluctant to remove me - any pair of hands will do, even if he does not believe what he is saying...