Thanks for the info XL (I must have pressed Reply just as you pressed Send), that seems about the same as I've read elsewhere. I make no claims to being an electronics expert but I saw both the resistor and non-resistor caps on DrATV and thought I'd double check here in case there's been anecdotal evidence pointing more towards one than the other. thumbs up So would it be okay to use the non-resistor head with my D8HA plug? That could eliminate any "need" to go to a hotter plug.