To piskanie moze byt remenom, alebo to obcas robi aj samotne servo v krajnych polohach, ale nemalo by to zhasnut motor. Zatazi ho, trosku mozu padnut otacky, ale nemal by zhasnut. Skor by som este hladal aj okolo motora.
Ibaze to servo by sa uz porucalo ale to by robilo stale , nie len pri nizsich teplotach.