I have used the gusset and it worked fine for me but if for some reason you need adjustability in your chainline the gusset is not the best one out there. there are some other spacer kits out there that use a bunch of spacers so you have chainline adjustability with the gusset you only have two positions to run the chainline at and also you are stuck using a thin sproket which can in theory screw up your freehub