Hello Goliath and welcome to the family, glad you could join us and we look forward to hearing more about you and Echo, what a nice name for a grey.
Echo still has plenty of time to learn to talk and it sounds like he might be a closet talker, doesn't want to talk if you are in the room, some are like that. Now my Josey will talk with us in the room and even answer you when you talk to her.
Most of us usually try to bathe or mist our greys about twice a week, some like the shower and some will tolerate a misting and a lot of us use the aloe vera juice when misting them, it makes the feathers softer and is soothing for the skin.
I don't know about a play group for birds, if you want another bird for him to interact with then get another one yourself, but as far as being with other parrots there is always the chance of transmitting a disease among other birds in close proximity.
Your technique may be just fine, he may just not like being handled and petted, some allow a lot and some are kind of hands off so respect his wishes and maybe in time he will allow more touching.
Please read thru the many threads on various topics for lots of useful information and ask questions if you have any, we do our best to get some answers and help you in any way we can.
If you have any pictures of Echo you would like to share with us we would love to see him.