Do any of you have a Leica R4 and successfully use a flash unit with it? If you do, would you please post the complete settings on both the camera and the flash that successfully get the flash to produce various light output levels? I have a Leica SF20 flash as well as two different Metz flashes and I just ordered the appropriate 351 Metz module that communicates with the R4. Meanwhile, the R4 manual states that neither the 1/100 th second, "X, and "B" settings can be set in the aperture priority and "P" modes, and I always shoot pictures in the aperture priority mode. Additionally, the R4 does not have TTL flash capability, so only an automatic setting can be established on the flash units. So, my problem is what to set the shutter ring on since the aforementioned settings are not permissable. Thanks in advance for any valuable advice you can provide!