This is probably a stupid question. I just recieved 4 small knob mufflers to complete some ludwig snares I have that are missing mufflers. I already have 3-4 large knob ones. I thought that All my ludwig snares have the mounting screw under the muffler knob, but after examinin them I noticed some have the screw on top of the knob and some have the screw under the knob. These mufflers I got in have the screw on top of the knob. WTF????
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