[sdiy] Arp Solina with excessive chorus noise

[Florian Anwander]

To my experience (2 Solinas, 1 Hohner String): the BBDs get quite noisy 
with the years.

I bought NOS replacements from  wutierson.com in Spain.
http://wutierson.com/en/home/parts/tca350-14-2-detail