I have not, but a caution: the fan blades, if they're really vibrating that much, are probably coming dangerously close to the radiator core. Core tubes are only 0.020" thick so if a blade touches them, it'll bore a hole to water in about zero seconds! Repair is not practically possible to a radiator drilled open by an errant fan. Pull the fan, take it apart and r&r the bad bearing/bushing. It'll be cheaper than shipping to & from CA, I'd bet, even if its still under some warranty.
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