As for juke boxes, I've modified quite a number of M-44's that were in use in Rock-Ola juke boxes. What I did was this: decrease tracking force, replacing the M-44 conical stylus by a M-95 (!) elliptical one. However, due to the way too high compliance this stylus cannot be used just like that. So I used a very small piece of soft foam that filled the gap between the cantilever and the tube, gently pushing it as far as it would go. By doing so, compliance was limited while still retaining the higher detail in sound. This modification greatly improved sound and it turned a juke box into real hifi producing equipment. Tracking force was set to around 2.5 grams, worked fine. But, as a consequence, the box was more susceptible for jolts and vibration if placed on a wooden floor. For home use this modification worked just fine. But as a rule, if you want to preserve a treasured record, never play it in a juke box. A record can be destroyed instantly if the machine is malfunctioning.