Originally Posted by AirheadRick
They are cast won't they break if you try to expand them?
You don't want to expand them much. How much are you going to sand off a bar?
I just opened up one of my spare clutch side perched with a big screwdriver in the clamp slot. Not much but if the thing is pretty close but just tight, should be enough. There is also a lot of room to clean up the inside of the perch.