Any way to fill these gaps?

Posted by DaveCootchie@reddit | projectcar | View on Reddit | 43 comments

The original leather steering wheel cover disintegrated after 30 years so I tore it off to reveal a mint rubber base model wheel underneath it. Except ford put these large relief cuts on the wheel so the stitching of the leather cover wouldn't stick up. I dig a skinny wheel on an old truck so I don't really want to throw a part store wheel cover at it but the grooves are annoying and sharp. Any suggestions beyond black JB weld?