Im restoring, and was reading how to restore a drum again. I came accross this part and would like to know more about this. My sonor lugs didnt have this and none of the drums I have restored have had this. Is this necessary, and excatly how do i do this? from the "How to restore a drum"
Internal Felt:
I usually leave it alone, if the lug does not have internal felt then you can pack it with a cotton ball (if that's all you have) or go get some heavy felt at the fabric store. Cut it in little rectangles so that it wraps around the spring