Hey guys, It appears that my chain sometimes hits the inside of the frame and the subframe as its slightly worn through both. Does anyone know a solution to this? I've checked and the chain is perfectly tensioned. Is there any aftermarket chain slider that stops the chain having so much side to side movement? I'm worried about it as the bike is a 2012 WR450F with only 1900km and theres already a decent amount of wear. Thanks guys.