I was a camera tech at Canon back in the days when FD cameras were still available new...I started there just as the EOS 1 was being launched, and have known Yoshi for 20 years. He's a very good techncian, even if he does have the bad habbit of taking parts from his own personal cameras to get his customers cameras working...
When I don't have the time (or have forgotten how to) repair something I trust Yoshi to repair my personal cameras...
Actually - I must drop my SRT 303 over to him..now that Morio has retired Yoshi will be the only person left who will service one correctly, including replacing the 20 odd different light seals in the camera!