Cornelius spigot

I have an old Cornelius chrome spigot that is quite old, and in very good
shape, at least to look at. I got it from an American Legion in Pittsburgh and
the marker on it was for Duquesne Heavy-Dry which was brewed in the early 40s.
This is an indication of at least how old
the spigot is. I replaced all the washers and other seals.
It shuts off fine, doesn't leak, but pours a stream of beer about as big as
wooden kitchen match. The faucet shaft is not the same as the one pictured at:
http://kegman.net/faucetparts.htm
but it appears to be the correct shaft for this spigot.  I can scan the shaft
that I have and email it to anyone who thinks they might have an idea of what
is restricting the beer flow.