Solinar
Analog Preferred
I'd be using my XA all the time if it didn't have the famous dodgy shutter button (first in the queue to the menders). And the vignetting can be a bit off-putting.
Another D.I.Y. fix, see the link below.
http://www.rangefinderforum.com/forums/showthread.php?t=137072
Even if you fail miserably - it wasn't the world's most expensive camera.
Best Regards,