I myself remember watching Carroll on the onld "Bozo the Clown" show that was produced in Boston mid-late 1960's and showing out here in L.A.. I thought even back then that the costume work was so much better than the hand puppetry he was doing. I also think that Jim probably recognized Carroll's strength in performing full-body characters and not so much in the smaller hand puppets. One early bit with Kermit interviewing a farmer-type character. Carroll was performing Fat Blue with a sort of "Pa Kettle" accent, and the work wasn't as "pretty" as I think Jim was used to seeing. But put Big Bird on a unicycle? Very cool!