A 4435 was meant to replace to 4420 it is a rebadged 9,10,11 something series from across the Pond. This one is hydro with RWA added.
I have done the sprocket blanks once. Saved nearly a grand then too. Two of the sprockets are pretty involved and my machinist has had a stroke from which he never regained his dexterity. With custom rates at $75-100 an hour. Thought this might an alternative.
Couldn't drag the Pictures over so here are the links. https://agrodoctor.eu/straw-walker/103771-33-tooth-roller-chain-sprocket-33t-z33-for-john-deere-combine-straw-walker.html?search_query=Z11690&results=1https://agrodoctor.eu/thresher/91772-16-tooth-chain-sprocket-for-john-deere-combine-threshing-drum-shaft-d36mm-16t.html