Originally Posted by Rucksta
There was a mod that came out in early '84 that put a rubber insert inside the shoe springs.
The purpose was to dampen harmonic vibrations and prevent the spring breaking posibly resulting in rear wheel lock-up.
A bit of garden hose soaked in hot water slips over the spring easily enough to achive the same sort of result.
Might be a good idea to do beforehand, to prevent from your skin getting stuck between the springs when they close up.