Recently chipped a ferrule (my fault) and had an ivory one installed in it's place. I am now getting a VERY noticeably higher amount of deflection. Not sure of the other ferrule material (LBM maybe?) so I don't know what I'm comparing it to... what I do know is the CB is squirting an extra 2 inches at 9 feet of med-firm maximum sidespin. I've always heard and believed that ferrule material alters deflection... but I had no idea it could have this strong of an effect. Just thought I'd post my experience for you to read. Same tip and shape, by the way.