My newly dual-sported '87 XR600 is currently running the stock 14/48 gearing, which is great off-road. On a couple of occasions I will be traveling on-road for 100 or so miles and would like to alter the gearing when necessary. I was thinking about just swapping in a 15 tooth countershaft sprocket for these trips. Does the case-saver have to be removed, since it is pretty tight with a 14 in there right now? Thanks.