Ssh with public key authentication

[Sweetman, David E RDECOM CIO]

I am trying to set up ssh public key authentication between several RHEL
machines.  I can successfully connect from machine1 (AS4) to other machines
(WS4,  release 9) using public key ( no password entered).  But I have not
been able to  connect to machine1 using public key.     I have gone thru the
steps several times with no success.  Any suggestions on what to do or how
to get better information than from the -v option ( -vvv is the best I've
gotten so far) ?

Thanks
Dave Sweetman