I found Ness Electronics at:
http://www.nesselectronics.com/
by using Google. When I searched on RCA 1858-1 I got a message saying
no match found. Then I tried RCA 18581 and go the same message. Then
I tried RCA18511 and got a match on RCA185110 which is a screw that is
out of stock. What's the secret?

Van