For obvious reasons I've never needed one :-)
:)
Exaktas are not hard to work on yourself if you feel
like it. You'll
need watchmaker's screwdrivers and a pair of non-magnetic tweezers[1],
but not much else. If you want to have a go, I'll dig out the nearest
model I have an talkyou through at least getting the shutter out of the
bodyshell. There is osmething in one of Tomosy's books on dismantling
the Exakta, I can check to see which one if you want to try to find it.
I'm not entirely comfortable with precision mechanicals, but I may break
down and have a go. Are you familiar with Miles Upton's book? Not
cheap, but if it's as good as some people think, might be worth it.
I'm pretty sure I don't want to do curtains myself.
It'll be a bit before I have time to dive into this project, so don't go
digging just yet.
De