I picked up one of these in quite good condition (lens is superb), some wear on the body and scratches, but for the money I paid it is great. This is my first manual focus rangefinder and I am wondering about the frame lines and their accuracy or lack thereof. How accurate have folks who have used this camera found the viewfinder to be?

Also, the counter only reads "170", so it seems I have a while to go before I hit the shutter overhaul number of 500, but I would like to find out about current places where I could get this serviced.

Thanks for all and any help.