I'm not talking about the slider fix, but tonight I noticed that my chain seems tight running on the slider. There is a groove on the top of the slider that the chain is hanging up in. Is this groove factory or is it worn out? It kinda looks like its made that way. Anyhow, the drag is so much that when I spin the rear tire it will stop almost immediately because of this. If it is worn out, then thats crazy... bike only has 20 hrs on it.