Originally Posted by
Lombard
Yup! Very common sight! 6600 were some of the less troublesome regarding this problem. Later generations were worse.
Unfortunately, cable fragments often get stuck inside the shifter. There is no way to open up the shifter and remove them. They aren't serviceable.
Anything put together can be taken apart. It does take meticulous care and patience. I don't recommend it, but isn't impossible and parts are NA.
It's why I bought an extra set when 6700 came out and they went on clearance many places.