my dm10 came from the factory with a ton of dow on the shim stack and I thought what a stupid action to lube the shim stack.. when I serviced my regs, after a year i cleaned it and let them dry..
When the dye tech told me to also lube the shim stack I then understood the reason it came like that from factory, after some searching I confirmed that they have to be lubed up.
No one said that lubing the shims heals anything, it is more like a preventative act, and when those who developed and invented the spring shim stacks say to do so, I do it. Also some of the shims are made of metals that they tend to rust, so lube will prevent that also.
So from all the above it becomes ''please lube the shims''.. C'mon we all know that a little lube helps a lot with friction(of the shim stack)!!!