Where do you guys put your chain rollers? Do you put them in the place where the rear brake thing is? Or do u drill above that and put it there? Ive also heard not to drill a hole because it could bend your frame if your chain comes off the sprocket. People on another forum said to drill and tap the whole then put it in. Either way I see no difference just as long as its there and it works. Any input is appriciated.