Project X needs a couple of sockets- SK-1400 for a 4CX-3000, and an SK-300 for a 4CX-5000. Does anyone happen to know whether the anode ring dimension of a 4CX-5000R is the same as a 4CX-5000A? Tnx, Mark -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Search: http://www.contesting.com/km9p/search.htm