cones "settle in" (loosen) in newly-overhauled hub?
I just built up a singlespeed rear wheel for someone on the west coast and am going to ship it to him. The wheel in question is an old freewheel rear hub, with different spacers so as to get the singlespeed freewheel at 42.5mm chainline. There's also a new (solid) axle, but the cones are the original - used though in very good condition.
I'm currently using a mishmash of steel spacers - washers and nuts - that make up 6mm of spacing on each side. But I'd like to use aluminum 6mm spacers, which would be simpler and more elegant.
Here's what I'm wondering. I've got the hub perfectly adjusted, but I would like it to be perfectly adjusted once the guy starts riding it. I think that my mishmash of steel spacers aren't going to "settle in" at all with riding - but I'm worried ant 6mm aluminum spacers might settle in a bit, and compress just a bit, which would mean that the hub ends up slightly loose instead of perfectly adjusted.
I don't think if this is something that happens - does it? Thanks.