Has anyone tried changing the spring/plunger/extractor on an A7? A7's are known to have the same issue. My A7 in 300WSM wears high rings because that's the only way that brass will clear the scope. If the thing wasn't so darn accurate I'd have sold it years ago.... Anyway, just wondering if the A7 could be fixed just like the 85's. I thought it was just an uncureable design flaw.