Most players will avoid the use of fine tuners with gut or perlon strings because fine tuners add weight to the bridge, lessening the tone. Gut and perlon strings tune more gradually than steel strings, so they are actually a bit easier to tune without the use of fine tuners. If you use perlon or gut strings and want to use fine tuners, we strongly recommend the use of a tailpiece with the fine tuners built in. Miscellaneous Points Plastic string packages and other items can damage a the finish, so don't leave them laying loose in the case. It's better to carry these items separately.
Many polishes leave a residue or are abrasive.
You don't really need them. Do not use furniture polish. First, loosen the strings to reduce the tension on the instrument, so the problem doesn't get worse. It is usual for instruments to need routine repairs and adjustments over the course of their use, but by simply avoiding extremes of temperature and humidity, you can avoid more major damage. Many instruments are damaged by heat during the summer, and by dryness and sudden temperature changes in winter.