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At Oshkosh, Orin gave me what seems to be very good advice for coping with the
inevitable engine sag/droop associated with new rubber mounts. His suggestion
was to place (2) 1/8" large area washers behind the two upper engine mounts,
then fit your cowl to the spinner. After x flight hours when the engine has
sagged 1/8", remove one washer from each upper mount. Remove the second washer
after the next 1/8" sag. He said it is quite a bit more trouble to try and fix
the problem by adding shims to the bottom mounts.

For those of you with the newer and supposedly softer mounts, would you expect
the engine to develop a sag of 1/4" total or perhaps even more? Also, do you
know the manufacturer and part number for these newer style mounts?

Angier Ames
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