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The main trouble is that these are more than likely original switches and they have springs on them an the springs loose there tension and cause you to have to put the switches a bit nearer to the operating arm so that they can work. Unless they were replaced they are 48 years old and have gone through a lot of abuse in there life with oil, grease, water and ice.
So if you have a problem with these switches it pays to have all the up and downlock switches replaced and rigged.
See what happens when you test fly it.
Regards
Pete
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