Im fitting a bigger rear sprocket (47 tooth vs 45 tooth) on my 2013 500 EXC tomorrow night. Previous owner shortened the chain to 114 links - so its going to be 'tight' whether it fits or not. Ive read posts about people "....unbolting, and turning the rear chain-guide around". Ive just had a quick look - i presume this is the clearish coloured inner part of the original rear lower chain-guide and not the black plastic outer- (which i guess stays 'as-is) " ????