Can I shim the harmonic balancer

Question? Would anyone have any concern with placing a 1/16 or 1/8 shim in front of crank oil slinger prior to install of damper. This of coarse lessens the amount of damper surface area on crankshaft. I need to move damper away from timing scale. Alternatives 1) purchase different damper 2) install 273 timing cover with bolt on timing scale which will be on passenger side in lieu of drivers. This will also require me to purchase cast iron water pump. Thoughts?