These original IBM models were much more durable than current Unicomp output. I suspect it comes down to the modern metal composition of the spring [being diffe

These original IBM models were much more durable than current Unicomp output. I suspect it comes down to the modern metal composition of the spring [being different than 80's versions]. See somebody else's similar experience, below. >I've been waiting for it to fail for a decade at this point so I can upgrade Yours must have been one of the good ones =D