Hi all, Today, I bought a bargain box of "500 pF, 20 KVDC" capacitors. They are apparently made by a firm called "CRL". They look like a doorknob cap with threaded ends. Part number appears to be "TV-20" (all quotes are read from the cap). Can anyone confirm my doorknob suspicion? Anyone use these for Tesla coil caps? Please relate any success/ failure stories using these units as well as any other info. Thanks, in advance. John Bowers