I just bought a Leitz APDOO 14003 self timer for my MP on ebay. I was so proud of myself until I realized that I couldn't use it without an adaptr. Would that be the Leitz OZTNO 14088 Shutter Release Cable Adaptor? If I buy that, am I missing anything else? Found one in a Leica Vintage Camera shop in Austria for 70 Euros, which is about $104 Cdn. Pretty steep price. Is there anything else that could do the trick?