Audiofeil is right, the MusicMaker cartridges are designed to go directly into an MM phono stage. Inserting more gain (via SUT or otherwise) is likely to overload the phono inputs and cause increased distortion.
As to the original question, I doubt that adding a headshell weight will have much impact on surface noise. The MusicMaker is designed for low-mid mass tonearms, which is exactly what you've got (assuming JMW 9). Not sure where you got the idea they're a mismatch, but they're not obviously so by the specs.
1. Record cleaning, including effective fluids and vacuum pickup, as Markphd said. This is vital. There's no substitute.
2. Upgrade phono stage. Many phono stages (including virtually all inexpensive ones) exaggerate transients from surface irregularities. Switching to a higher quality, better built phono stage almost always reduces the sonic effects of each "click" and "pop".
As to the original question, I doubt that adding a headshell weight will have much impact on surface noise. The MusicMaker is designed for low-mid mass tonearms, which is exactly what you've got (assuming JMW 9). Not sure where you got the idea they're a mismatch, but they're not obviously so by the specs.
1. Record cleaning, including effective fluids and vacuum pickup, as Markphd said. This is vital. There's no substitute.
2. Upgrade phono stage. Many phono stages (including virtually all inexpensive ones) exaggerate transients from surface irregularities. Switching to a higher quality, better built phono stage almost always reduces the sonic effects of each "click" and "pop".