Here is a pic of 2017 scraper on left and 2018 scraper on right. I ran both this season. my 2017 scrapers got updated to the flexible finger. That is the vertical rubber piece right behind the seed slot. improvement was that the seed firmer on the new design is held firmly in place. my 2017 scrapers the seed firmer was loose right out of the box. 2017 firmer had so much movement that the firmer was out of the ground due to excessive movement in the mount.
Otico wheel were a success. Very happy with that change over.