If it has short stays, then you will have to tolerate some rubbing in the small ring+11,12,13 range. If you are in those gears it is time to be on the big ring anyway.
If you have D/A 9 hub then you need the spacers to fit the 10 cassette. Leave the spacers on the hub side. If you remove the spaer between the hub and freehub, I believe you will reduce the hub spacing about 1mm.
The deal is, with a racey frame and short stays, the chain will touch the big ring when in the smallest gears in the back, even with a perfect chainline.
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I am in the woods and I have gone crazy.