On Feb 26, 4:07*pm, wrote:
Another thinks storing the main wing pins in a
greased holder will somehow gouge the pins when the greased holder
protects them from just that.

Any pin storage system that does not clean the pins before each
insertion has the risk of dirt transfer. The pins can pick up dirt
while they are installed in the spars both at the far end and at the
gap between the spars. Any dirt picked up here may be transferred to
grease in the storage tubes.

Whether that is a problem is left to the individual owner to decide.
Since I have found grit in my storage tubes more than once I'll
continue to clean my pins and use fresh grease before every insertion.

Andy