Any help on this will be appreciated.Maybe some one on here has experienced this. In January I greased all the swingarm and linkage bearings,and while doing so I saw that the rubber chain slider on the swingarm was worn thru,and the chain started to cut thru the arm on the bottom right at the front where the bearings are. I filled in the grooves with JB weld and put on a new slider,front and rear sprockets and chain. All is good.It's an '08 RM250,I should say. So now after around 20 hours on it I'm going thru it again,and I find the same thing,slider worn out and chain rubbing the swingarm. Sprockets are good and chain has always been lubed and tensioned properly. Anyone have any ideas?