We taped the shock mounts together before installing the engine. Just put the tape clear out on the edge so you don't catch it with the engine, and leave enough slack in the tape so the bolt can rise out (but not fall out).
I don't know if it was just us, but start with the bottom mounts, they're the hardest to get to and the 4th bolt was a real bear to get lined up.
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Chanler Childs
RV-8A
Empennage complete
Building wings
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