Rough translation of Post #19
The pins (ie stylus) of PRS-350 and 650 differ by about 3 mm in length, the plastic tip from 650, it can be sanded and smoothed with nail polisher (ie nail file), and then adjusts (ie fits)! Pins (ie stylus) PRS-650 and 950 are identical.
http://www.ersatzteilservice24.eu/in...3fef7ba42174a7