I've ran into this before but can't remember what I used. Need to install a cleanout on a stack in the basement. Stack is cast iron. Going to install pvc cleanout tee and want to use no hub bands, normal install. But.... the cast iron stack is just a tad smaller than 4", 4" no hub bands are just slightly too big. Does Fernco or someone else make a banded coupling to go from 4" pvc to this slightly smaller sized cast iron? The 4" no hub band might work but I'm pretty sure it will crimp and look like crap. The cast iron is about a 1/4" smaller. Any ideas?